From 2f8dec791b64c0675890c92a441c3479310f6647 Mon Sep 17 00:00:00 2001
From: thomasjm <tom@codedown.io>
Date: Fri, 29 May 2026 01:05:50 -0700
Subject: [PATCH 01/10] Bump nixpkgsMaster and bump main nixpkgs to
 release-25.11

---
 default.nix                                   |  12 +-
 flake.lock                                    |  14 +-
 flake.nix                                     |   2 +-
 modules/kernels/bash/default.nix              |   6 +-
 modules/kernels/bash/kernel.nix               |   4 +-
 .../bash/language_server_bash/default.nix     |  10 +-
 .../language_server_clangd/cling-parser.nix   |   2 +-
 modules/kernels/cpp/module.nix                |   2 +-
 modules/kernels/go/kernel.nix                 |  14 +-
 modules/kernels/haskell/compilers-stable.nix  |  27 ----
 .../kernels/haskell/compilers-unstable.nix    |  77 ++++++++---
 modules/kernels/octave/kernel.nix             |   2 +-
 modules/kernels/octave/octave.nix             |   4 +-
 modules/kernels/postgres/kernel.nix           |  10 +-
 modules/kernels/ruby/default.nix              |   6 +-
 modules/kernels/ruby/iruby/Gemfile            |   3 +-
 modules/kernels/ruby/iruby/Gemfile.lock       |  47 ++++---
 modules/kernels/ruby/iruby/default.nix        |   2 +-
 modules/kernels/ruby/iruby/gemset.nix         | 125 +++++++++++++-----
 modules/kernels/ruby/module.nix               |   8 +-
 .../diagnostic-languageserver/node-env.nix    |   2 +-
 nix/makeEnvironment.nix                       |   1 -
 old_languages/dot/kernel.nix                  |   4 +-
 sample_environments.nix                       |   3 +-
 sample_environments/julia19.nix               |  11 --
 sample_environments/ruby_3_3.nix              |  10 ++
 sample_environments/ruby_3_4.nix              |  10 ++
 tests/app/Spec/Tests/Julia.hs                 |   3 -
 tests/app/Spec/Tests/Ruby.hs                  |   6 +-
 29 files changed, 264 insertions(+), 163 deletions(-)
 delete mode 100644 sample_environments/julia19.nix
 create mode 100644 sample_environments/ruby_3_3.nix
 create mode 100644 sample_environments/ruby_3_4.nix

diff --git a/default.nix b/default.nix
index eac39519..5f674b9f 100644
--- a/default.nix
+++ b/default.nix
@@ -6,32 +6,32 @@
 }:
 
 let
-  stableRev = "3634657dc244b3e4868a9b37b7243ea33aa786ec"; # nixpkgs-rev
+  stableRev = "f5190b692864072e79a2fb7c52d72d1d57fcb269"; # nixpkgs-rev
   stableFetchFromGitHub = fetchFromGitHub {
     owner = "NixOS";
     repo = "nixpkgs";
     rev = stableRev;
-    hash = "sha256-B+oXXmNRTOajmEpzYJDrpZmYRFIBWA/fKCgY5CXCc5M="; # nixpkgs-hash
+    hash = "sha256-6mqKLf7ukajFOrVjO7EH1i37CQOVG22AnuU3wR84xK0="; # nixpkgs-hash
   };
   stableBuiltins = builtins.fetchTarball {
     url = ''https://github.com/NixOS/nixpkgs/archive/${stableRev}.tar.gz'';
-    sha256 = "14vkq8jy861853ghyn01a929i6d5xf860wsak2iyck2icdg1gsh7"; # nixpkgs-sha256
+    sha256 = "1bf470gw2dz5ks06s6wm0c4znbfn0yqknqxm7b2si4gfzqnqlspa"; # nixpkgs-sha256
   };
   pkgsStableSrc = if fetchFromGitHub != null then stableFetchFromGitHub else stableBuiltins;
   pkgsStable = import pkgsStableSrc ({
     inherit overlays;
   } // (if system == null then {} else { inherit system; }));
 
-  masterRev = "bb9c7537288d5410c0661f7762c175beffd75170"; # nixpkgs-master-rev
+  masterRev = "f4d46d85b687293bc8d872010fb66a4f23c23139"; # nixpkgs-master-rev
   masterFetchFromGitHub = fetchFromGitHub {
     owner = "NixOS";
     repo = "nixpkgs";
     rev = masterRev;
-    hash = "sha256-W0e4WJk3A1hmKN4AcoYujF9x9yXaReB+L32JoQFbkv8="; # nixpkgs-master-hash
+    hash = "sha256-j0P9+h7HX67KNlGki6puFfx8xO6wx4Jz23jXg3dpfCw="; # nixpkgs-master-hash
   };
   masterBuiltins = builtins.fetchTarball {
     url = ''https://github.com/NixOS/nixpkgs/archive/${masterRev}.tar.gz'';
-    sha256 = "1zwjbc0s32bx5xzf0ifs4pvp2pwc5s37406y51k5h0rpk5cbhisv"; # nixpkgs-master-sha256
+    sha256 = "0b3wd5vq7mvqvdrq5ixhxv27rz0mdsm8p92i6v5awpy73vxgshwg"; # nixpkgs-master-sha256
   };
   pkgsMasterSrc = if fetchFromGitHub != null then masterFetchFromGitHub else masterBuiltins;
   pkgsMaster = import pkgsMasterSrc ({
diff --git a/flake.lock b/flake.lock
index bfa3ec19..8cfa03a5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -17,27 +17,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755208203,
-        "narHash": "sha256-B+oXXmNRTOajmEpzYJDrpZmYRFIBWA/fKCgY5CXCc5M=",
+        "lastModified": 1779930049,
+        "narHash": "sha256-6mqKLf7ukajFOrVjO7EH1i37CQOVG22AnuU3wR84xK0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3634657dc244b3e4868a9b37b7243ea33aa786ec",
+        "rev": "f5190b692864072e79a2fb7c52d72d1d57fcb269",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "release-25.05",
+        "ref": "release-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "nixpkgs-master": {
       "locked": {
-        "lastModified": 1759478436,
-        "narHash": "sha256-W0e4WJk3A1hmKN4AcoYujF9x9yXaReB+L32JoQFbkv8=",
+        "lastModified": 1779951496,
+        "narHash": "sha256-j0P9+h7HX67KNlGki6puFfx8xO6wx4Jz23jXg3dpfCw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bb9c7537288d5410c0661f7762c175beffd75170",
+        "rev": "f4d46d85b687293bc8d872010fb66a4f23c23139",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 6aa0fcb7..388e9eab 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "CodeDown languages";
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-25.05";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-25.11";
   inputs.nixpkgs-master.url = "github:NixOS/nixpkgs/master";
 
   inputs.flake-utils.url = "github:numtide/flake-utils";
diff --git a/modules/kernels/bash/default.nix b/modules/kernels/bash/default.nix
index e3c2cb32..3ec98e0b 100644
--- a/modules/kernels/bash/default.nix
+++ b/modules/kernels/bash/default.nix
@@ -1,10 +1,10 @@
 { callPackage
 , lib
 , python3
-, nodePackages
 , symlinkJoin
 
 , bash
+, bash-language-server
 
 , settings
 , settingsSchema
@@ -47,8 +47,8 @@ symlinkJoin {
     };
     versions = {
       bash = bash.version;
-      bash-language-server = nodePackages.bash-language-server.version;
-      bash_kernel = python3.pkgs.bash_kernel.version;
+      bash-language-server = bash-language-server.version;
+      bash-kernel = python3.pkgs.bash-kernel.version;
     };
     inherit packageOptions packageSearch;
     inherit settingsSchema settings;
diff --git a/modules/kernels/bash/kernel.nix b/modules/kernels/bash/kernel.nix
index 98928d72..bb96299a 100644
--- a/modules/kernels/bash/kernel.nix
+++ b/modules/kernels/bash/kernel.nix
@@ -10,10 +10,10 @@
 let
   common = callPackage ../common.nix {};
 
-  python = python3.withPackages (ps: [ps.bash_kernel]);
+  python = python3.withPackages (ps: [ps.bash-kernel]);
 
   # Checks failed on macOS on release-25.05. Disabling them is one option:
-  # python = python3.withPackages (ps: [(ps.bash_kernel.overrideAttrs (_oldAttrs: { doCheck = false; }))]);
+  # python = python3.withPackages (ps: [(ps.bash-kernel.overrideAttrs (_oldAttrs: { doCheck = false; }))]);
 
 in
 
diff --git a/modules/kernels/bash/language_server_bash/default.nix b/modules/kernels/bash/language_server_bash/default.nix
index b6cba2b9..cfa97894 100644
--- a/modules/kernels/bash/language_server_bash/default.nix
+++ b/modules/kernels/bash/language_server_bash/default.nix
@@ -1,9 +1,9 @@
-{ lib
-, runCommand
-, callPackage
+{ callPackage
+, lib
 , makeWrapper
-, nodePackages
+, runCommand
 
+, bash-language-server
 , shellcheck
 , unixtools
 
@@ -17,7 +17,7 @@ let
   # will make it fail to hit in the cache.nixos.org and then the user will need
   # to download pnpm in order to build it. But we submitted an upstream fix to reduce
   # the closure size; see https://github.com/NixOS/nixpkgs/pull/521755
-  bashLanguageServer = nodePackages.bash-language-server;
+  bashLanguageServer = bash-language-server;
 
   # manWithPages = (import ../shared.nix).manWithPages;
 
diff --git a/modules/kernels/cpp/language_server_clangd/cling-parser.nix b/modules/kernels/cpp/language_server_clangd/cling-parser.nix
index cf328d3f..09e55679 100644
--- a/modules/kernels/cpp/language_server_clangd/cling-parser.nix
+++ b/modules/kernels/cpp/language_server_clangd/cling-parser.nix
@@ -17,7 +17,7 @@ let
       owner = "codedownio";
       repo = "cpp-notebook-language-server";
       rev = "v${version}";
-      hash = "sha256-KGCj8pH38sFIgYEBC7bRycav1+rY8nidzDwC1qM6h5c=";
+      hash = "sha256-unUZw2fG4ESxg4WIqEI6kkKspq1Bu+v2WzpinL3C17U=";
     };
 
     sourceRoot = "${src.name}/cling-parser";
diff --git a/modules/kernels/cpp/module.nix b/modules/kernels/cpp/module.nix
index 217ffe56..03bcf8bb 100644
--- a/modules/kernels/cpp/module.nix
+++ b/modules/kernels/cpp/module.nix
@@ -3,7 +3,7 @@
 with lib;
 
 let
-  pkgsToUse = config.pkgsMaster;
+  pkgsToUse = config.pkgs;
 
 in
 
diff --git a/modules/kernels/go/kernel.nix b/modules/kernels/go/kernel.nix
index e5f59b07..c19c6e89 100644
--- a/modules/kernels/go/kernel.nix
+++ b/modules/kernels/go/kernel.nix
@@ -1,5 +1,6 @@
 { lib
 , callPackage
+, fetchFromGitHub
 , gophernotes
 
 , attrs
@@ -12,13 +13,24 @@ with lib;
 let
   common = callPackage ../common.nix {};
 
+  gophernotesPatched = gophernotes.overrideAttrs (_oldAttrs: {
+    src = fetchFromGitHub {
+      owner = "codedownio";
+      repo = "gophernotes";
+      rev = "6b18077f97aa913b73093beeb2152b2d51ee64af";
+      hash = "sha256-gSD2zUWka3cur5jkv4siYp2gJdxD+00bmJi6BZd0c+c="; # nixpkgs-hash
+    };
+
+    vendorHash = "sha256-bGaXnd0E6dRNiwvGIn7Ptddrt7dRzPfkPThgHPuL2Vo=";
+  });
+
 in
 
 common.makeJupyterKernel {
   go = {
     displayName = "Go";
     argv = [
-      "${gophernotes}/bin/gophernotes"
+      "${gophernotesPatched}/bin/gophernotes"
       "{connection_file}"
     ];
     language = head attrs;
diff --git a/modules/kernels/haskell/compilers-stable.nix b/modules/kernels/haskell/compilers-stable.nix
index 2ee0fa15..8a941674 100644
--- a/modules/kernels/haskell/compilers-stable.nix
+++ b/modules/kernels/haskell/compilers-stable.nix
@@ -9,31 +9,4 @@
 
 
 {
-  ghc96 = haskell.packages.ghc96.override {
-    overrides = self: super: {
-      ghc-parser = self.callCabal2nix "ghc-parser" (
-        runCommand "ghc-parser-source" {} "cp -r ${ihaskell-source}/ghc-parser $out"
-      ) {};
-
-      ipython-kernel = self.callCabal2nix "ipython-kernel" (
-        runCommand "ipython-kernel" {} "cp -r ${ihaskell-source}/ipython-kernel $out"
-      ) {};
-
-      ihaskell = self.callCabal2nixWithOptions "ihaskell" ihaskell-source "--no-check" {};
-    };
-  };
-
-  ghc98 = haskell.packages.ghc98.override {
-    overrides = self: super: {
-      ghc-parser = self.callCabal2nix "ghc-parser" (
-        runCommand "ghc-parser-source" {} "cp -r ${ihaskell-source}/ghc-parser $out"
-      ) {};
-
-      ipython-kernel = self.callCabal2nix "ipython-kernel" (
-        runCommand "ipython-kernel" {} "cp -r ${ihaskell-source}/ipython-kernel $out"
-      ) {};
-
-      ihaskell = self.callCabal2nixWithOptions "ihaskell" ihaskell-source "--no-check" {};
-    };
-  };
 }
diff --git a/modules/kernels/haskell/compilers-unstable.nix b/modules/kernels/haskell/compilers-unstable.nix
index ef8dcdb3..1ba86d58 100644
--- a/modules/kernels/haskell/compilers-unstable.nix
+++ b/modules/kernels/haskell/compilers-unstable.nix
@@ -8,16 +8,16 @@
 }:
 
 {
-  ghc910 = let
-    "ghc-syntax-highlighter_0_0_12_0" = haskell.packages.ghc910.callPackage
-      ({ mkDerivation, base, ghc-lib-parser_9_10_2_20250515, hspec, hspec-discover, text
+  ghc96 = let
+    "ghc-syntax-highlighter_0_0_11_0" = haskell.packages.ghc96.callPackage
+      ({ mkDerivation, base, ghc-lib-parser, hspec, hspec-discover, text
        }:
          mkDerivation {
            pname = "ghc-syntax-highlighter";
-           version = "0.0.12.0";
-           sha256 = "sha256-qZ1FkqZIeICogR5QTsILNWaZrnCvt6LLJQq66QnFdGA=";
+           version = "0.0.11.0";
+           sha256 = "sha256-umeX9DNHPNQ3D66C3WPKZyo4NKOl7XyHz61V1QyHW3g=";
            enableSeparateDataOutput = true;
-           libraryHaskellDepends = [ base ghc-lib-parser_9_10_2_20250515 text ];
+           libraryHaskellDepends = [ base ghc-lib-parser text ];
            testHaskellDepends = [ base hspec text ];
            testToolDepends = [ hspec-discover ];
            description = "Syntax highlighter for Haskell using the lexer of GHC";
@@ -25,7 +25,7 @@
            hydraPlatforms = lib.platforms.none;
          }) {};
   in
-    haskell.packages.ghc910.override {
+    haskell.packages.ghc96.override {
       overrides = self: super: {
         ghc-parser = self.callCabal2nix "ghc-parser" (
           runCommand "ghc-parser-source" {} "cp -r ${ihaskell-source}/ghc-parser $out"
@@ -37,21 +37,54 @@
 
         ihaskell = self.callCabal2nixWithOptions "ihaskell" ihaskell-source "--no-check" {};
 
-        ghc-lib-parser = self.ghc-lib-parser_9_10_2_20250515;
-
-        # We need a specific un-released version here; see
-        # https://github.com/ndmitchell/hlint/issues/1613#issuecomment-3231912769
-        hlint = let
-          src = fetchFromGitHub {
-            owner = "ndmitchell";
-            repo = "hlint";
-            rev = "7dfba720eaf6fa9bd0b23ae269334559aa722847";
-            sha256 = "sha256-niGBdSrkatr+TZCcLYXo4MDg5FyXTYiKQ5K+ZIWSWBs=";
-          };
-        in
-          self.callCabal2nix "hlint" src {};
-
-        ghc-syntax-highlighter = ghc-syntax-highlighter_0_0_12_0;
+        ghc-syntax-highlighter = ghc-syntax-highlighter_0_0_11_0;
+      };
+    };
+
+  ghc98 = let
+    "ghc-syntax-highlighter_0_0_11_0" = haskell.packages.ghc98.callPackage
+      ({ mkDerivation, base, ghc-lib-parser, hspec, hspec-discover, text
+       }:
+         mkDerivation {
+           pname = "ghc-syntax-highlighter";
+           version = "0.0.11.0";
+           sha256 = "sha256-umeX9DNHPNQ3D66C3WPKZyo4NKOl7XyHz61V1QyHW3g=";
+           enableSeparateDataOutput = true;
+           libraryHaskellDepends = [ base ghc-lib-parser text ];
+           testHaskellDepends = [ base hspec text ];
+           testToolDepends = [ hspec-discover ];
+           description = "Syntax highlighter for Haskell using the lexer of GHC";
+           license = lib.licenses.bsd3;
+           hydraPlatforms = lib.platforms.none;
+         }) {};
+  in
+    haskell.packages.ghc98.override {
+      overrides = self: super: {
+        ghc-parser = self.callCabal2nix "ghc-parser" (
+          runCommand "ghc-parser-source" {} "cp -r ${ihaskell-source}/ghc-parser $out"
+        ) {};
+
+        ipython-kernel = self.callCabal2nix "ipython-kernel" (
+          runCommand "ipython-kernel" {} "cp -r ${ihaskell-source}/ipython-kernel $out"
+        ) {};
+
+        ihaskell = self.callCabal2nixWithOptions "ihaskell" ihaskell-source "--no-check" {};
+
+        ghc-syntax-highlighter = ghc-syntax-highlighter_0_0_11_0;
+      };
+    };
+
+  ghc910 = haskell.packages.ghc910.override {
+      overrides = self: super: {
+        ghc-parser = self.callCabal2nix "ghc-parser" (
+          runCommand "ghc-parser-source" {} "cp -r ${ihaskell-source}/ghc-parser $out"
+        ) {};
+
+        ipython-kernel = self.callCabal2nix "ipython-kernel" (
+          runCommand "ipython-kernel" {} "cp -r ${ihaskell-source}/ipython-kernel $out"
+        ) {};
+
+        ihaskell = self.callCabal2nixWithOptions "ihaskell" ihaskell-source "--no-check" {};
       };
     };
 
diff --git a/modules/kernels/octave/kernel.nix b/modules/kernels/octave/kernel.nix
index 71b2848c..aa1eb6e2 100644
--- a/modules/kernels/octave/kernel.nix
+++ b/modules/kernels/octave/kernel.nix
@@ -68,7 +68,7 @@ let
 
   python = runCommand "python" {
     inherit octave;
-    python = python3.withPackages (ps: [ps.metakernel octaveKernel] ++ (with ps; [traitlets jupyter_core ipykernel]));
+    python = python3.withPackages (ps: [ps.metakernel octaveKernel] ++ (with ps; [traitlets jupyter-core ipykernel]));
     bash = bashInteractive;
     buildInputs = [makeWrapper];
   } ''
diff --git a/modules/kernels/octave/octave.nix b/modules/kernels/octave/octave.nix
index 5d077efd..30212c4c 100644
--- a/modules/kernels/octave/octave.nix
+++ b/modules/kernels/octave/octave.nix
@@ -7,8 +7,8 @@
 , makeFontsConf
 , carlito
 , dejavu_fonts
+, font-misc-misc
 , freefont_ttf
-, xorg
 
 , epstool
 , fig2dev
@@ -24,7 +24,7 @@ let
   fontsConf = makeFontsConf {
     fontDirectories = [
       carlito dejavu_fonts
-      freefont_ttf xorg.fontmiscmisc
+      freefont_ttf font-misc-misc
       # liberation_ttf_v1_binary
       # liberation_ttf_v2_binary
     ];
diff --git a/modules/kernels/postgres/kernel.nix b/modules/kernels/postgres/kernel.nix
index 1aa55e0d..af55b3c7 100644
--- a/modules/kernels/postgres/kernel.nix
+++ b/modules/kernels/postgres/kernel.nix
@@ -1,7 +1,6 @@
 { callPackage
 , fetchFromGitHub
 , python3
-, bash
 , attrs
 , extensions
 }:
@@ -9,10 +8,13 @@
 let
   common = callPackage ../common.nix {};
 
-  app = python3.pkgs.buildPythonPackage rec {
+  app = python3.pkgs.buildPythonPackage {
     pname = "postgres_kernel";
     version = "0.1";
 
+    pyproject = true;
+    build-system = [ python3.pkgs.setuptools ];
+
     src = fetchFromGitHub {
       owner = "codedownio";
       repo = "postgres_kernel";
@@ -20,13 +22,13 @@ let
       sha256 = "1cwn3glgwa6gq1hn6bq8b14c8vn2xmjv5wrwsjc5n6ydqkx3qlhf";
     };
 
-    propagatedBuildInputs = with python3.pkgs; [jupyter_client psycopg2 tabulate ipykernel];
+    propagatedBuildInputs = with python3.pkgs; [jupyter-client psycopg2 tabulate ipykernel];
 
     doCheck = false;
 
     meta = {
       description = "A simple Jupyter kernel for PostgreSQL";
-      homepage = https://github.com/bgschiller/postgres_kernel;
+      homepage = "https://github.com/bgschiller/postgres_kernel";
     };
   };
 
diff --git a/modules/kernels/ruby/default.nix b/modules/kernels/ruby/default.nix
index 9c063e1d..7f12c073 100644
--- a/modules/kernels/ruby/default.nix
+++ b/modules/kernels/ruby/default.nix
@@ -1,10 +1,6 @@
 { lib
 , callPackage
-, pkgs
-, recurseIntoAttrs
-, stdenv
 , symlinkJoin
-, writeTextDir
 
 , ruby
 
@@ -22,7 +18,7 @@ let
 
   kernelName = "ruby";
 
-  rubyPackages = recurseIntoAttrs ruby.gems;
+  rubyPackages = lib.recurseIntoAttrs ruby.gems;
 
   packageOptions = rubyPackages;
   packageSearch = common.searcher packageOptions;
diff --git a/modules/kernels/ruby/iruby/Gemfile b/modules/kernels/ruby/iruby/Gemfile
index 9a97b151..db60ff18 100644
--- a/modules/kernels/ruby/iruby/Gemfile
+++ b/modules/kernels/ruby/iruby/Gemfile
@@ -1,2 +1,3 @@
 source 'https://rubygems.org'
-gem 'iruby', "0.8.0"
+gem 'iruby', "0.8.2"
+gem 'ostruct'
diff --git a/modules/kernels/ruby/iruby/Gemfile.lock b/modules/kernels/ruby/iruby/Gemfile.lock
index 6bab2931..6fed5d89 100644
--- a/modules/kernels/ruby/iruby/Gemfile.lock
+++ b/modules/kernels/ruby/iruby/Gemfile.lock
@@ -2,42 +2,55 @@ GEM
   remote: https://rubygems.org/
   specs:
     data_uri (0.1.0)
-    ffi (1.17.0)
+    date (3.5.1)
+    erb (6.0.4)
+    ffi (1.17.4)
     ffi-rzmq (2.0.7)
       ffi-rzmq-core (>= 1.0.7)
     ffi-rzmq-core (1.0.7)
       ffi
-    io-console (0.7.2)
-    irb (1.14.1)
+    io-console (0.8.2)
+    irb (1.18.0)
+      pp (>= 0.6.0)
+      prism (>= 1.3.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    iruby (0.8.0)
+    iruby (0.8.2)
       data_uri (~> 0.1)
       ffi-rzmq
       irb
       logger
       mime-types (>= 3.3.1)
       multi_json (~> 1.11)
-      native-package-installer
-    logger (1.6.1)
-    mime-types (3.5.2)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2024.0903)
-    multi_json (1.15.0)
-    native-package-installer (1.1.9)
-    psych (5.1.2)
+    logger (1.7.0)
+    mime-types (3.7.0)
+      logger
+      mime-types-data (~> 3.2025, >= 3.2025.0507)
+    mime-types-data (3.2026.0414)
+    multi_json (1.21.1)
+    ostruct (0.6.3)
+    pp (0.6.3)
+      prettyprint
+    prettyprint (0.2.0)
+    prism (1.9.0)
+    psych (5.3.1)
+      date
       stringio
-    rdoc (6.7.0)
+    rdoc (7.2.0)
+      erb
       psych (>= 4.0.0)
-    reline (0.5.10)
+      tsort
+    reline (0.6.3)
       io-console (~> 0.5)
-    stringio (3.1.1)
+    stringio (3.2.0)
+    tsort (0.2.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  iruby (= 0.8.0)
+  iruby (= 0.8.2)
+  ostruct
 
 BUNDLED WITH
-   2.5.16
+   2.7.2
diff --git a/modules/kernels/ruby/iruby/default.nix b/modules/kernels/ruby/iruby/default.nix
index 87353c4c..bd88b5b3 100644
--- a/modules/kernels/ruby/iruby/default.nix
+++ b/modules/kernels/ruby/iruby/default.nix
@@ -30,7 +30,7 @@ let
     # buildInputs = [ zeromq libtool ];
 
     passthru = {
-      version = "v0.8.0";
+      version = "v0.8.2";
     };
 
     meta = with lib; {
diff --git a/modules/kernels/ruby/iruby/gemset.nix b/modules/kernels/ruby/iruby/gemset.nix
index 6e6ee103..0df7517a 100644
--- a/modules/kernels/ruby/iruby/gemset.nix
+++ b/modules/kernels/ruby/iruby/gemset.nix
@@ -9,15 +9,35 @@
     };
     version = "0.1.0";
   };
+  date = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1h0db8r2v5llxdbzkzyllkfniqw9gm092qn7cbaib73v9lw0c3bm";
+      type = "gem";
+    };
+    version = "3.5.1";
+  };
+  erb = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1ncmbdjf2bwmk0jf5cxywns9zbxyfiy4h4p3pzi7yddyjhv81qrq";
+      type = "gem";
+    };
+    version = "6.0.4";
+  };
   ffi = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "07139870npj59jnl8vmk39ja3gdk3fb5z9vc0lf32y2h891hwqsi";
+      sha256 = "1kqasqvy8d7r09ri4n6bkdwbk63j7afd9ilsw34nzlgh0qp69ldw";
       type = "gem";
     };
-    version = "1.17.0";
+    version = "1.17.4";
   };
   ffi-rzmq = {
     dependencies = ["ffi-rzmq-core"];
@@ -46,105 +66,136 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "08d2lx42pa8jjav0lcjbzfzmw61b8imxr9041pva8xzqabrczp7h";
+      sha256 = "1k0lk3pwadm2myvpg893n8jshmrf2sigrd4ki15lymy7gixaxqyn";
       type = "gem";
     };
-    version = "0.7.2";
+    version = "0.8.2";
   };
   irb = {
-    dependencies = ["rdoc" "reline"];
+    dependencies = ["pp" "prism" "rdoc" "reline"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1y40dv3caswr81dlsyln6vnmmpzf5jcal2rqjbsglvnkb0xh0xar";
+      sha256 = "1qs8a9vprg7s8krgq4s0pygr91hclqqyz98ik15p0m1sf2h5956y";
       type = "gem";
     };
-    version = "1.14.1";
+    version = "1.18.0";
   };
   iruby = {
-    dependencies = ["data_uri" "ffi-rzmq" "irb" "logger" "mime-types" "multi_json" "native-package-installer"];
+    dependencies = ["data_uri" "ffi-rzmq" "irb" "logger" "mime-types" "multi_json"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1nvn52ailvk6cl100s9vryamhi7cj06bdfmadps4q57690bwp2rh";
+      sha256 = "11lb7flkqpaff303g6lj9vzdw9zc0s2qmz36a6i4x4qj559bz30n";
       type = "gem";
     };
-    version = "0.8.0";
+    version = "0.8.2";
   };
   logger = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0lwncq2rf8gm79g2rcnnyzs26ma1f4wnfjm6gs4zf2wlsdz5in9s";
+      sha256 = "00q2zznygpbls8asz5knjvvj2brr3ghmqxgr83xnrdj4rk3xwvhr";
       type = "gem";
     };
-    version = "1.6.1";
+    version = "1.7.0";
   };
   mime-types = {
-    dependencies = ["mime-types-data"];
+    dependencies = ["logger" "mime-types-data"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1r64z0m5zrn4k37wabfnv43wa6yivgdfk6cf2rpmmirlz889yaf1";
+      sha256 = "0mjyxl7c0xzyqdqa8r45hqg7jcw2prp3hkp39mdf223g4hfgdsyw";
       type = "gem";
     };
-    version = "3.5.2";
+    version = "3.7.0";
   };
   mime-types-data = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0d5bmxcq87nj6h5rx6b1fkdzq8256yba97s2vlkszpwhc47m9rfs";
+      sha256 = "1k28j6ww8rf43r5i8278jvm2cq3pnzsvqm7yqpb4p93kadjlq726";
       type = "gem";
     };
-    version = "3.2024.0903";
+    version = "3.2026.0414";
   };
   multi_json = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0pb1g1y3dsiahavspyzkdy39j4q377009f6ix0bh1ag4nqw43l0z";
+      sha256 = "1040lr5y2phn7avdyam6zw6ikprlmk77biw3yhclsfwfh0qnl4p6";
+      type = "gem";
+    };
+    version = "1.21.1";
+  };
+  ostruct = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "04nrir9wdpc4izqwqbysxyly8y7hsfr4fsv69rw91lfi9d5fv8lm";
       type = "gem";
     };
-    version = "1.15.0";
+    version = "0.6.3";
   };
-  native-package-installer = {
+  pp = {
+    dependencies = ["prettyprint"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0bvr9q7qwbmg9jfg85r1i5l7d0yxlgp0l2jg62j921vm49mipd7v";
+      sha256 = "1xlxmg86k5kifci1xvlmgw56x88dmqf04zfzn7zcr4qb8ladal99";
       type = "gem";
     };
-    version = "1.1.9";
+    version = "0.6.3";
+  };
+  prettyprint = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "14zicq3plqi217w6xahv7b8f7aj5kpxv1j1w98344ix9h5ay3j9b";
+      type = "gem";
+    };
+    version = "0.2.0";
+  };
+  prism = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "11ggfikcs1lv17nhmhqyyp6z8nq5pkfcj6a904047hljkxm0qlvv";
+      type = "gem";
+    };
+    version = "1.9.0";
   };
   psych = {
-    dependencies = ["stringio"];
+    dependencies = ["date" "stringio"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0s5383m6004q76xm3lb732bp4sjzb6mxb6rbgn129gy2izsj4wrk";
+      sha256 = "0x0r3gc66abv8i4dw0x0370b5hrshjfp6kpp7wbp178cy775fypb";
       type = "gem";
     };
-    version = "5.1.2";
+    version = "5.3.1";
   };
   rdoc = {
-    dependencies = ["psych"];
+    dependencies = ["erb" "psych" "tsort"];
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0ygk2zk0ky3d88v3ll7qh6xqvbvw5jin0hqdi1xkv1dhaw7myzdi";
+      sha256 = "14iiyb4yi1chdzrynrk74xbhmikml3ixgdayjma3p700singfl46";
       type = "gem";
     };
-    version = "6.7.0";
+    version = "7.2.0";
   };
   reline = {
     dependencies = ["io-console"];
@@ -152,19 +203,29 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0rl1jmxs7pay58l7lkxkrn6nkdpk52k8rvnfwqsd1swjlxlwjq0n";
+      sha256 = "0d8q5c4nh2g9pp758kizh8sfrvngynrjlm0i1zn3cnsnfd4v160i";
       type = "gem";
     };
-    version = "0.5.10";
+    version = "0.6.3";
   };
   stringio = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "07mfqb40b2wh53k33h91zva78f9zwcdnl85jiq74wnaw2wa6wiak";
+      sha256 = "1q92y9627yisykyscv0bdsrrgyaajc2qr56dwlzx7ysgigjv4z63";
+      type = "gem";
+    };
+    version = "3.2.0";
+  };
+  tsort = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "17q8h020dw73wjmql50lqw5ddsngg67jfw8ncjv476l5ys9sfl4n";
       type = "gem";
     };
-    version = "3.1.1";
+    version = "0.2.0";
   };
 }
diff --git a/modules/kernels/ruby/module.nix b/modules/kernels/ruby/module.nix
index cfc2a79b..bee3c791 100644
--- a/modules/kernels/ruby/module.nix
+++ b/modules/kernels/ruby/module.nix
@@ -28,10 +28,14 @@ in
         example = "Ruby version";
         type = types.enum ([
           "ruby"
-          "ruby_3_1"
-          "ruby_3_2"
+          # "ruby_3_1" # EOL
+          # "ruby_3_2" # EOL
           "ruby_3_3"
           "ruby_3_4"
+
+          # iruby doesn't support yet; upstream has unreleased fix though; see
+          # https://github.com/SciRuby/iruby/pull/380
+          # "ruby_4_0"
         ]);
         # ++ (builtins.filter (name: builtins.substring 0 (builtins.stringLength "ruby_") name == "ruby_")
         #                     (builtins.attrNames pkgs))
diff --git a/modules/language_servers/diagnostic-languageserver/node-env.nix b/modules/language_servers/diagnostic-languageserver/node-env.nix
index bc1e3662..3fab04fc 100644
--- a/modules/language_servers/diagnostic-languageserver/node-env.nix
+++ b/modules/language_servers/diagnostic-languageserver/node-env.nix
@@ -4,7 +4,7 @@
 
 let
   # Workaround to cope with utillinux in Nixpkgs 20.09 and util-linux in Nixpkgs master
-  utillinux = if pkgs ? utillinux then pkgs.utillinux else pkgs.util-linux;
+  utillinux = if pkgs ? util-linux then pkgs.util-linux else pkgs.utillinux;
 
   python = if nodejs ? python then nodejs.python else python2;
 
diff --git a/nix/makeEnvironment.nix b/nix/makeEnvironment.nix
index ea84b155..4f257646 100644
--- a/nix/makeEnvironment.nix
+++ b/nix/makeEnvironment.nix
@@ -5,7 +5,6 @@
 , linkFarm
 , runCommand
 , symlinkJoin
-, system
 , writeTextDir
 , writeText
 
diff --git a/old_languages/dot/kernel.nix b/old_languages/dot/kernel.nix
index 75be65bf..27096f6d 100644
--- a/old_languages/dot/kernel.nix
+++ b/old_languages/dot/kernel.nix
@@ -25,7 +25,7 @@ let
       sha256 = "1gmvybwfj6m1sjk1h6350446z3wfnai2062sfs0zgs3lczhflxsc";
     };
 
-    buildInputs = with python3.pkgs; [ jupyter_client ipykernel ];
+    buildInputs = with python3.pkgs; [ jupyter-client ipykernel ];
 
     propagatedBuildInputs = with python3.pkgs; [ graphviz fontconfig ipykernel ];
 
@@ -44,7 +44,7 @@ let
   fontsConf = makeFontsConf {
     fontDirectories = [
       carlito dejavu_fonts
-      freefont_ttf xorg.fontmiscmisc
+      freefont_ttf font-misc-misc
       # liberation_ttf_v1_binary
       # liberation_ttf_v2_binary
     ];
diff --git a/sample_environments.nix b/sample_environments.nix
index 5734c660..0b404eb0 100644
--- a/sample_environments.nix
+++ b/sample_environments.nix
@@ -17,7 +17,6 @@ args: {
   go = import ./sample_environments/go.nix args;
   julia110 = import ./sample_environments/julia110.nix args;
   julia111 = import ./sample_environments/julia111.nix args;
-  julia19 = import ./sample_environments/julia19.nix args;
   mega = import ./sample_environments/mega.nix args;
   octave = import ./sample_environments/octave.nix args;
   postgres = import ./sample_environments/postgres.nix args;
@@ -28,6 +27,8 @@ args: {
   python3 = import ./sample_environments/python3.nix args;
   r = import ./sample_environments/r.nix args;
   ruby = import ./sample_environments/ruby.nix args;
+  ruby_3_3 = import ./sample_environments/ruby_3_3.nix args;
+  ruby_3_4 = import ./sample_environments/ruby_3_4.nix args;
   rust = import ./sample_environments/rust.nix args;
   shells-bash = import ./sample_environments/shells-bash.nix args;
   shells-fish = import ./sample_environments/shells-fish.nix args;
diff --git a/sample_environments/julia19.nix b/sample_environments/julia19.nix
deleted file mode 100644
index b4cfc9f4..00000000
--- a/sample_environments/julia19.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{ codedown
-, ...
-}:
-
-codedown.makeEnvironment {
-  name = "julia19";
-
-  kernels.julia.enable = true;
-  kernels.julia.juliaPackage = "julia_19";
-  kernels.julia.packages = ["JSON3" "Plots"];
-}
diff --git a/sample_environments/ruby_3_3.nix b/sample_environments/ruby_3_3.nix
new file mode 100644
index 00000000..8e5c24fc
--- /dev/null
+++ b/sample_environments/ruby_3_3.nix
@@ -0,0 +1,10 @@
+{ codedown
+, ...
+}:
+
+codedown.makeEnvironment {
+  name = "ruby";
+
+  kernels.ruby.enable = true;
+  kernels.ruby.rubyPackage = "ruby_3_3";
+}
diff --git a/sample_environments/ruby_3_4.nix b/sample_environments/ruby_3_4.nix
new file mode 100644
index 00000000..71a6b191
--- /dev/null
+++ b/sample_environments/ruby_3_4.nix
@@ -0,0 +1,10 @@
+{ codedown
+, ...
+}:
+
+codedown.makeEnvironment {
+  name = "ruby";
+
+  kernels.ruby.enable = true;
+  kernels.ruby.rubyPackage = "ruby_3_4";
+}
diff --git a/tests/app/Spec/Tests/Julia.hs b/tests/app/Spec/Tests/Julia.hs
index 74486431..5af90cdd 100644
--- a/tests/app/Spec/Tests/Julia.hs
+++ b/tests/app/Spec/Tests/Julia.hs
@@ -24,9 +24,6 @@ import qualified Spec.Tests.Julia.Diagnostics as Diagnostics
 
 tests :: LanguageSpec
 tests = do
-  juliaTests "julia_19"
-  juliaTests "julia_19-bin"
-
   juliaTests "julia_110"
   juliaTests "julia_110-bin"
 
diff --git a/tests/app/Spec/Tests/Ruby.hs b/tests/app/Spec/Tests/Ruby.hs
index a6097e2d..404fb195 100644
--- a/tests/app/Spec/Tests/Ruby.hs
+++ b/tests/app/Spec/Tests/Ruby.hs
@@ -26,11 +26,11 @@ import TestLib.Types
 tests :: LanguageSpec
 tests = describe "Ruby" $ do
   kernelTests "ruby"
-  kernelTests "ruby_3_1"
-  kernelTests "ruby_3_2"
+  -- kernelTests "ruby_3_1" # EOL
+  -- kernelTests "ruby_3_2" # EOL
   kernelTests "ruby_3_3"
   kernelTests "ruby_3_4"
-  -- kernelTests "ruby_3_5"
+  -- kernelTests "ruby_4_0" -- iruby 0.8.2 doesn't support Ruby 4.0 yet
 
 kernelName :: Text -> Text
 kernelName _rubyPackage = "ruby"

From 5fe7ba31831067530399cd7e39446a63817fb5ec Mon Sep 17 00:00:00 2001
From: thomasjm <tom@codedown.io>
Date: Fri, 29 May 2026 01:15:15 -0700
Subject: [PATCH 02/10] Fix warnings about using system

---
 modules/kernels/cpp/default.nix                              | 3 +--
 modules/kernels/cpp/language_server_clangd/cnls.nix          | 4 ++--
 modules/kernels/cpp/language_server_clangd/default.nix       | 3 +--
 modules/kernels/go/default.nix                               | 3 +--
 modules/kernels/go/language-server-gopls/gnls.nix            | 4 ++--
 .../go/language-server-gopls/language-server-gopls.nix       | 3 +--
 modules/kernels/haskell/language-server-hls/hnls.nix         | 5 ++---
 modules/kernels/rust/language_server_rust_analyzer/rnls.nix  | 3 +--
 sample_environments.nix                                      | 2 +-
 9 files changed, 12 insertions(+), 18 deletions(-)

diff --git a/modules/kernels/cpp/default.nix b/modules/kernels/cpp/default.nix
index 9d5a58a6..ce025d00 100644
--- a/modules/kernels/cpp/default.nix
+++ b/modules/kernels/cpp/default.nix
@@ -5,7 +5,6 @@
 , clang
 , xeus-cling
 , llvmPackages
-, system
 
 , settings
 , settingsSchema
@@ -25,7 +24,7 @@ let
 
   languageServers = lib.optionals settings.lsp.clangd.enable
     [(callPackage ./language_server_clangd {
-      inherit kernelName llvmPackages system cling;
+      inherit kernelName llvmPackages cling;
       settings = settings.lsp.clangd;
     })];
 
diff --git a/modules/kernels/cpp/language_server_clangd/cnls.nix b/modules/kernels/cpp/language_server_clangd/cnls.nix
index 4f5704f5..41bb0499 100644
--- a/modules/kernels/cpp/language_server_clangd/cnls.nix
+++ b/modules/kernels/cpp/language_server_clangd/cnls.nix
@@ -1,5 +1,5 @@
 { fetchzip
-, system
+, stdenv
 }:
 
 # Fetch a static binary from GitHub releases
@@ -30,4 +30,4 @@
     hash = "sha256-UGB6tVuWlMOxskNFdICaVTurdbd95auAMg7Ty4Iawng=";
   };
   # HASHES_END
-}.${system}
+}.${stdenv.hostPlatform.system}
diff --git a/modules/kernels/cpp/language_server_clangd/default.nix b/modules/kernels/cpp/language_server_clangd/default.nix
index 340744d5..6a7523db 100644
--- a/modules/kernels/cpp/language_server_clangd/default.nix
+++ b/modules/kernels/cpp/language_server_clangd/default.nix
@@ -3,7 +3,6 @@
 , runCommand
 , makeWrapper
 , llvmPackages
-, system
 , cling
 
 , kernelName
@@ -15,7 +14,7 @@ let
 
   clangd = llvmPackages.clang-tools;
 
-  cnls = callPackage ./cnls.nix { inherit system; };
+  cnls = callPackage ./cnls.nix {};
 
   cnlsVersion = import ./cnls-version.nix;
 
diff --git a/modules/kernels/go/default.nix b/modules/kernels/go/default.nix
index ecc31f30..d020f84a 100644
--- a/modules/kernels/go/default.nix
+++ b/modules/kernels/go/default.nix
@@ -2,7 +2,6 @@
 , gopls
 , lib
 , symlinkJoin
-, system
 
 , go
 
@@ -23,7 +22,7 @@ let
   languageServers =
     []
     ++ lib.optionals settings.lsp.gopls.enable [(callPackage ./language-server-gopls/language-server-gopls.nix {
-      inherit go attrs kernelName system;
+      inherit go attrs kernelName;
       settings = settings.lsp.gopls;
     })]
   ;
diff --git a/modules/kernels/go/language-server-gopls/gnls.nix b/modules/kernels/go/language-server-gopls/gnls.nix
index bbe81f04..ef2fdb43 100644
--- a/modules/kernels/go/language-server-gopls/gnls.nix
+++ b/modules/kernels/go/language-server-gopls/gnls.nix
@@ -1,5 +1,5 @@
 { fetchzip
-, system
+, stdenv
 }:
 
 # Fetch a static binary from GitHub releases
@@ -30,4 +30,4 @@
     hash = "sha256-9n1ExuhRLioeGfdQlLTyRCr+P0+YR4yc3BLBd9W2jww=";
   };
   # HASHES_END
-}.${system}
+}.${stdenv.hostPlatform.system}
diff --git a/modules/kernels/go/language-server-gopls/language-server-gopls.nix b/modules/kernels/go/language-server-gopls/language-server-gopls.nix
index 753a7abb..4e2880ad 100644
--- a/modules/kernels/go/language-server-gopls/language-server-gopls.nix
+++ b/modules/kernels/go/language-server-gopls/language-server-gopls.nix
@@ -3,7 +3,6 @@
 , runCommand
 , makeWrapper
 , pkgs
-, system
 
 , attrs
 , kernelName
@@ -18,7 +17,7 @@ let
 
   gnlsVersion = import ./gnls-version.nix;
 
-  gnls = callPackage ./gnls.nix { inherit system; };
+  gnls = callPackage ./gnls.nix {};
 
   go-parser = callPackage ./go-parser.nix {};
 
diff --git a/modules/kernels/haskell/language-server-hls/hnls.nix b/modules/kernels/haskell/language-server-hls/hnls.nix
index 3655340d..bda71139 100644
--- a/modules/kernels/haskell/language-server-hls/hnls.nix
+++ b/modules/kernels/haskell/language-server-hls/hnls.nix
@@ -3,7 +3,6 @@
 , fetchzip
 , lib
 , stdenv
-, system
 
 , ghc
 , snapshot
@@ -22,7 +21,7 @@ let
         cp -r ./. $out
       '';
     };
-    mkUrl = ghc: system: "https://github.com/codedownio/haskell-notebook-language-server/releases/download/v${version}/haskell-notebook-language-server-${version}-${ghc}-${system}.tar.gz";
+    mkUrl = ghc: sys: "https://github.com/codedownio/haskell-notebook-language-server/releases/download/v${version}/haskell-notebook-language-server-${version}-${ghc}-${sys}.tar.gz";
   in
     {
       # HASHES_START
@@ -138,7 +137,7 @@ let
   #   };
   # versions = localFlakeVersions;
 
-  desiredVersion = "ghc" + (builtins.replaceStrings ["."] [""] (lib.versions.majorMinor ghc.version)) + "-" + system;
+  desiredVersion = "ghc" + (builtins.replaceStrings ["."] [""] (lib.versions.majorMinor ghc.version)) + "-" + stdenv.hostPlatform.system;
 
 in
 
diff --git a/modules/kernels/rust/language_server_rust_analyzer/rnls.nix b/modules/kernels/rust/language_server_rust_analyzer/rnls.nix
index 5ce31952..8cfd0efb 100644
--- a/modules/kernels/rust/language_server_rust_analyzer/rnls.nix
+++ b/modules/kernels/rust/language_server_rust_analyzer/rnls.nix
@@ -1,6 +1,5 @@
 { fetchzip
 , stdenv
-, system
 }:
 
 # Build from source method. Blows up the closure!
@@ -46,4 +45,4 @@
     hash = "sha256-Krsoh3WLG8TkXKTEtFNCThbCc1UQjlziiDngOgvOtF4=";
   };
   # HASHES_END
-}.${system}
+}.${stdenv.hostPlatform.system}
diff --git a/sample_environments.nix b/sample_environments.nix
index 0b404eb0..3d51462d 100644
--- a/sample_environments.nix
+++ b/sample_environments.nix
@@ -26,9 +26,9 @@ args: {
   python313 = import ./sample_environments/python313.nix args;
   python3 = import ./sample_environments/python3.nix args;
   r = import ./sample_environments/r.nix args;
-  ruby = import ./sample_environments/ruby.nix args;
   ruby_3_3 = import ./sample_environments/ruby_3_3.nix args;
   ruby_3_4 = import ./sample_environments/ruby_3_4.nix args;
+  ruby = import ./sample_environments/ruby.nix args;
   rust = import ./sample_environments/rust.nix args;
   shells-bash = import ./sample_environments/shells-bash.nix args;
   shells-fish = import ./sample_environments/shells-fish.nix args;

From 2a97b2839d7d37705073c978a7d1ed9d83a20b23 Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Sat, 30 May 2026 01:27:08 -0700
Subject: [PATCH 03/10] rust: fix rand test failing on darwin

---
 modules/kernels/rust/evcxr/default.nix | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/modules/kernels/rust/evcxr/default.nix b/modules/kernels/rust/evcxr/default.nix
index 02ce91e6..85d2b12a 100644
--- a/modules/kernels/rust/evcxr/default.nix
+++ b/modules/kernels/rust/evcxr/default.nix
@@ -1,8 +1,10 @@
 { callPackage
 , lib
+, libiconv
 , makeWrapper
 , python3
 , runCommand
+, stdenv
 
 , CoreServices
 , Security
@@ -72,10 +74,19 @@ evcxr.overrideAttrs (oldAttrs: {
 
         buildInputs = [makeWrapper];
 
+        # On Darwin, rustc invokes `cc` for linking at runtime. cc is the Nix
+        # clang wrapper, which only adds library paths it has been told about
+        # via NIX_LDFLAGS_<suffix>. libiconv is normally pulled in by stdenv
+        # buildInputs during a Nix build, but evcxr links user code at *runtime*
+        # outside any derivation, so the wrapper sees no NIX_LDFLAGS and rustc
+        # ends up emitting `-liconv` with no `-L` for it. Bake the libiconv
+        # path into the wrapper here so runtime linking finds it.
         makeWrapperArgs = [
           "--set" "CARGO_HOME" "${cargoHome packages}"
           "--set" "EVCXR_CONFIG_DIR" "${evcxrConfigDir packages}"
           "--prefix" "PATH" ":" "${lib.makeBinPath [rustc cargo]}"
+        ] ++ lib.optionals stdenv.isDarwin [
+          "--set" "NIX_LDFLAGS_${stdenv.cc.suffixSalt}" "-L${lib.getLib libiconv}/lib"
         ];
 
         passthru = {

From a7784d4bea27e1cfb5d9620f983c55450639d010 Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Sat, 30 May 2026 01:36:38 -0700
Subject: [PATCH 04/10] rust: fix another failure on darwin, closes #83

---
 tests/app/Spec/Tests/Rust/Diagnostics.hs | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/tests/app/Spec/Tests/Rust/Diagnostics.hs b/tests/app/Spec/Tests/Rust/Diagnostics.hs
index 36df9e16..5195c1bc 100644
--- a/tests/app/Spec/Tests/Rust/Diagnostics.hs
+++ b/tests/app/Spec/Tests/Rust/Diagnostics.hs
@@ -20,15 +20,16 @@ tests = describe "Diagnostics" $ do
       , (Range (Position 0 0) (Position 0 8), Nothing, "a macro with a similar name exists: `println`")
       ]
 
-  testDiagnostics "rust-analyzer" "test.rs" LanguageKind_Rust [__i|struct A { a: u8, b: u8 }
-                                                                   const a: A = A { a: 10, };
-                                                                  |] $ \diagnostics -> do
-    assertDiagnosticRanges' (L.sortBy (compare `on` (^. LSP.message)) diagnostics) [
-      (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing field `b` in initializer of `A`\nmissing `b`")
-      -- (Range (Position 1 6) (Position 1 7), Just (InR "non_upper_case_globals"), "Constant `a` should have UPPER_SNAKE_CASE name, e.g. `A`")
-      -- , (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing field `b` in initializer of `A`\nmissing `b`")
-      -- , (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing structure fields:\n- b\n")
-      ]
+  testDiagnosticsLabel "rust-analyzer, test.rs with missing struct field" "rust-analyzer" "test.rs" LanguageKind_Rust
+    [__i|struct A { a: u8, b: u8 }
+         const a: A = A { a: 10, };
+        |] $ \diagnostics ->
+      assertDiagnosticRanges' (L.sortBy (compare `on` (^. LSP.message)) diagnostics) [
+        (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing field `b` in initializer of `A`\nmissing `b`")
+        -- (Range (Position 1 6) (Position 1 7), Just (InR "non_upper_case_globals"), "Constant `a` should have UPPER_SNAKE_CASE name, e.g. `A`")
+        -- , (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing field `b` in initializer of `A`\nmissing `b`")
+        -- , (Range (Position 1 13) (Position 1 14), Just (InR "E0063"), "missing structure fields:\n- b\n")
+        ]
 
   testDiagnostics "rust-analyzer" "main.ipynb" LanguageKind_Rust [__i|println!("Hello world");
                                                                       eprintln!("Hello error");

From e867b7cc10365b9a2f20676702621aad14b898bd Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Sat, 30 May 2026 13:53:38 -0700
Subject: [PATCH 05/10] More fixes

---
 flake.nix                        |  4 +++-
 modules/kernels/julia/module.nix |  9 ++++++--
 nix/nodehun-overlay.nix          | 38 ++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 3 deletions(-)
 create mode 100644 nix/nodehun-overlay.nix

diff --git a/flake.nix b/flake.nix
index 388e9eab..e1f0aebb 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,7 +9,9 @@
   outputs = { self, nixpkgs, nixpkgs-master, flake-utils }:
     flake-utils.lib.eachDefaultSystem (system:
       let
-        overlays = [];
+        overlays = [
+          (import ./nix/nodehun-overlay.nix)
+        ];
         pkgsStable = import nixpkgs { inherit system overlays; };
         pkgsMaster = import nixpkgs-master { inherit system overlays; };
 
diff --git a/modules/kernels/julia/module.nix b/modules/kernels/julia/module.nix
index 6cf95f44..0796101d 100644
--- a/modules/kernels/julia/module.nix
+++ b/modules/kernels/julia/module.nix
@@ -80,9 +80,14 @@ in
       julia = let
         juliaPackage = config.kernels.julia.juliaPackage;
         requestedJulia = getAttr juliaPackage pkgsToUse;
+        hasBin = builtins.hasAttr (juliaPackage + "-bin") pkgsToUse;
+        # On Darwin, nixpkgs lists julia source builds as supported (meta.unsupported = false)
+        # but the actual build fails (PCRE2 build errors). Prefer the -bin variant on Darwin
+        # whenever it's available, since it works in practice.
+        preferBin = requestedJulia.meta.unsupported || (pkgsToUse.stdenv.isDarwin && hasBin);
         in
-          if requestedJulia.meta.unsupported
-          then (if builtins.hasAttr (juliaPackage + "-bin") pkgsToUse then pkgsToUse.${juliaPackage + "-bin"} else throw "${juliaPackage} is not supported on this system and fallback ${juliaPackage}-bin was not found.")
+          if preferBin
+          then (if hasBin then pkgsToUse.${juliaPackage + "-bin"} else throw "${juliaPackage} is not supported on this system and fallback ${juliaPackage}-bin was not found.")
           else requestedJulia;
 
       settings = config.kernels.julia;
diff --git a/nix/nodehun-overlay.nix b/nix/nodehun-overlay.nix
new file mode 100644
index 00000000..5e1ad05f
--- /dev/null
+++ b/nix/nodehun-overlay.nix
@@ -0,0 +1,38 @@
+# Fix the nodehun build on Darwin under newer Apple clang.
+#
+# nodehun 3.0.2 bundles an old node-addon-api whose napi.h does
+#
+#   static const napi_typedarray_type unknown_array_type =
+#     static_cast<napi_typedarray_type>(-1);
+#
+# Newer clang (Apple SDK 14+) rejects this as "in-class initializer for static
+# data member is not a constant expression" because -1 is outside the enum's
+# declared range. -Wno-enum-constexpr-conversion downgrades it on Darwin.
+final: prev: {
+  nodehun = prev.nodehun.overrideAttrs (oldAttrs: {
+    # The vendored node-addon-api 1.6.3 in nodehun's package-lock has
+    #   static const napi_typedarray_type unknown_array_type =
+    #     static_cast<napi_typedarray_type>(-1);
+    # Newer clang (Apple SDK 14+) rejects this in-class initializer because
+    # -1 is outside the enum's declared range under stricter constexpr
+    # enum-range checking. The current upstream node-addon-api dropped this
+    # sentinel entirely and defaults to napi_int8_array; we do the same.
+    # The value is only used as a "no-match" return from a primitive→typed-
+    # array-type lookup that nodehun never invokes for the unmapped types.
+    #
+    # `npmConfigHook` runs as a postPatch hook and itself does both `npm ci`
+    # (which materialises node_modules) and `npm rebuild` (which compiles
+    # the native addon via node-gyp) in one go. We tell npm rebuild to skip
+    # scripts so node-gyp doesn't run yet, patch the now-present header,
+    # then drive the native build ourselves in preBuild.
+    npmRebuildFlags = (oldAttrs.npmRebuildFlags or []) ++ [ "--ignore-scripts" ];
+
+    preBuild = (oldAttrs.preBuild or "") + ''
+      if [ -f node_modules/node-addon-api/napi.h ]; then
+        substituteInPlace node_modules/node-addon-api/napi.h \
+          --replace-fail 'static_cast<napi_typedarray_type>(-1)' 'napi_int8_array'
+      fi
+      npm rebuild --offline --foreground-scripts
+    '';
+  });
+}

From 0e64b58323195348402d2977e77b6de232a58f45 Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Mon, 1 Jun 2026 14:33:20 -0700
Subject: [PATCH 06/10] Apply nodehun overlay in default.nix so the test
 harness gets the patched build

---
 default.nix | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/default.nix b/default.nix
index 5f674b9f..559b2321 100644
--- a/default.nix
+++ b/default.nix
@@ -6,6 +6,12 @@
 }:
 
 let
+  # Overlays that must apply to every codedown consumer, including the test
+  # harness which imports this default.nix directly (bypassing flake.nix). The
+  # nodehun overlay fixes the spellchecker's native build on newer Apple clang.
+  baseOverlays = [ (import ./nix/nodehun-overlay.nix) ];
+  allOverlays = baseOverlays ++ overlays;
+
   stableRev = "f5190b692864072e79a2fb7c52d72d1d57fcb269"; # nixpkgs-rev
   stableFetchFromGitHub = fetchFromGitHub {
     owner = "NixOS";
@@ -19,7 +25,7 @@ let
   };
   pkgsStableSrc = if fetchFromGitHub != null then stableFetchFromGitHub else stableBuiltins;
   pkgsStable = import pkgsStableSrc ({
-    inherit overlays;
+    overlays = allOverlays;
   } // (if system == null then {} else { inherit system; }));
 
   masterRev = "f4d46d85b687293bc8d872010fb66a4f23c23139"; # nixpkgs-master-rev
@@ -35,7 +41,7 @@ let
   };
   pkgsMasterSrc = if fetchFromGitHub != null then masterFetchFromGitHub else masterBuiltins;
   pkgsMaster = import pkgsMasterSrc ({
-    inherit overlays;
+    overlays = allOverlays;
   } // (if system == null then {} else { inherit system; }));
 
 in

From a47dca0fc824ab8d767e04e1abf02e5564dd459b Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Mon, 1 Jun 2026 14:49:18 -0700
Subject: [PATCH 07/10] Apply nodehun Darwin fix as a local override instead of
 a global overlay

---
 default.nix                                   | 10 +----
 flake.nix                                     |  7 +---
 .../markdown-spellcheck-lsp/default.nix       |  7 +++-
 .../nodehun-darwin-fix.nix                    | 28 ++++++++++++++
 nix/nodehun-overlay.nix                       | 38 -------------------
 5 files changed, 38 insertions(+), 52 deletions(-)
 create mode 100644 modules/language_servers/markdown-spellcheck-lsp/nodehun-darwin-fix.nix
 delete mode 100644 nix/nodehun-overlay.nix

diff --git a/default.nix b/default.nix
index 559b2321..5f674b9f 100644
--- a/default.nix
+++ b/default.nix
@@ -6,12 +6,6 @@
 }:
 
 let
-  # Overlays that must apply to every codedown consumer, including the test
-  # harness which imports this default.nix directly (bypassing flake.nix). The
-  # nodehun overlay fixes the spellchecker's native build on newer Apple clang.
-  baseOverlays = [ (import ./nix/nodehun-overlay.nix) ];
-  allOverlays = baseOverlays ++ overlays;
-
   stableRev = "f5190b692864072e79a2fb7c52d72d1d57fcb269"; # nixpkgs-rev
   stableFetchFromGitHub = fetchFromGitHub {
     owner = "NixOS";
@@ -25,7 +19,7 @@ let
   };
   pkgsStableSrc = if fetchFromGitHub != null then stableFetchFromGitHub else stableBuiltins;
   pkgsStable = import pkgsStableSrc ({
-    overlays = allOverlays;
+    inherit overlays;
   } // (if system == null then {} else { inherit system; }));
 
   masterRev = "f4d46d85b687293bc8d872010fb66a4f23c23139"; # nixpkgs-master-rev
@@ -41,7 +35,7 @@ let
   };
   pkgsMasterSrc = if fetchFromGitHub != null then masterFetchFromGitHub else masterBuiltins;
   pkgsMaster = import pkgsMasterSrc ({
-    overlays = allOverlays;
+    inherit overlays;
   } // (if system == null then {} else { inherit system; }));
 
 in
diff --git a/flake.nix b/flake.nix
index e1f0aebb..8fe6a4ce 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,11 +9,8 @@
   outputs = { self, nixpkgs, nixpkgs-master, flake-utils }:
     flake-utils.lib.eachDefaultSystem (system:
       let
-        overlays = [
-          (import ./nix/nodehun-overlay.nix)
-        ];
-        pkgsStable = import nixpkgs { inherit system overlays; };
-        pkgsMaster = import nixpkgs-master { inherit system overlays; };
+        pkgsStable = import nixpkgs { inherit system; };
+        pkgsMaster = import nixpkgs-master { inherit system; };
 
         codedown = import ./codedown.nix {
           pkgsStableSrc = nixpkgs;
diff --git a/modules/language_servers/markdown-spellcheck-lsp/default.nix b/modules/language_servers/markdown-spellcheck-lsp/default.nix
index 5155ebb7..62a7b6f5 100644
--- a/modules/language_servers/markdown-spellcheck-lsp/default.nix
+++ b/modules/language_servers/markdown-spellcheck-lsp/default.nix
@@ -20,6 +20,11 @@ let
 
   nodejs = nodejs-slim;
 
+  # nodehun's native build fails on Darwin under newer Apple clang; patch it.
+  nodehun' = if stdenv.isDarwin
+             then (import ./nodehun-darwin-fix.nix) nodehun
+             else nodehun;
+
   # nodeHeaders = runCommand "node-${nodejs.version}-headers.tar.gz" { buildInputs = []; } ''
   #   dir="node-v${nodejs.version}"
   #   mkdir "$dir"
@@ -53,7 +58,7 @@ let
   } ''
     mkdir -p $out/bin
     makeWrapper ${nodejs}/bin/node $out/bin/markdown-spellcheck-lsp \
-      --set NODE_PATH ${nodehun}/lib/node_modules \
+      --set NODE_PATH ${nodehun'}/lib/node_modules \
       --add-flags ${indexJs}
   '';
 
diff --git a/modules/language_servers/markdown-spellcheck-lsp/nodehun-darwin-fix.nix b/modules/language_servers/markdown-spellcheck-lsp/nodehun-darwin-fix.nix
new file mode 100644
index 00000000..25fe442b
--- /dev/null
+++ b/modules/language_servers/markdown-spellcheck-lsp/nodehun-darwin-fix.nix
@@ -0,0 +1,28 @@
+# Fix the nodehun build on Darwin under newer Apple clang.
+#
+# nodehun 3.0.2 vendors node-addon-api 1.6.3, whose napi.h has
+#   static const napi_typedarray_type unknown_array_type =
+#     static_cast<napi_typedarray_type>(-1);
+# Newer clang (Apple SDK 14+) rejects this in-class initializer because -1 is
+# outside the enum's declared range under stricter constexpr enum-range
+# checking. Upstream node-addon-api dropped this sentinel entirely and defaults
+# to napi_int8_array; we do the same. The value is only used as a "no-match"
+# return from a primitive->typed-array-type lookup that nodehun never invokes
+# for the unmapped types.
+#
+# `npmConfigHook` runs as a postPatch hook and itself does both `npm ci` (which
+# materialises node_modules) and `npm rebuild` (which compiles the native addon
+# via node-gyp) in one go. We tell npm rebuild to skip scripts so node-gyp
+# doesn't run yet, patch the now-present header, then drive the native build
+# ourselves in preBuild.
+nodehun: nodehun.overrideAttrs (oldAttrs: {
+  npmRebuildFlags = (oldAttrs.npmRebuildFlags or []) ++ [ "--ignore-scripts" ];
+
+  preBuild = (oldAttrs.preBuild or "") + ''
+    if [ -f node_modules/node-addon-api/napi.h ]; then
+      substituteInPlace node_modules/node-addon-api/napi.h \
+        --replace-fail 'static_cast<napi_typedarray_type>(-1)' 'napi_int8_array'
+    fi
+    npm rebuild --offline --foreground-scripts
+  '';
+})
diff --git a/nix/nodehun-overlay.nix b/nix/nodehun-overlay.nix
deleted file mode 100644
index 5e1ad05f..00000000
--- a/nix/nodehun-overlay.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-# Fix the nodehun build on Darwin under newer Apple clang.
-#
-# nodehun 3.0.2 bundles an old node-addon-api whose napi.h does
-#
-#   static const napi_typedarray_type unknown_array_type =
-#     static_cast<napi_typedarray_type>(-1);
-#
-# Newer clang (Apple SDK 14+) rejects this as "in-class initializer for static
-# data member is not a constant expression" because -1 is outside the enum's
-# declared range. -Wno-enum-constexpr-conversion downgrades it on Darwin.
-final: prev: {
-  nodehun = prev.nodehun.overrideAttrs (oldAttrs: {
-    # The vendored node-addon-api 1.6.3 in nodehun's package-lock has
-    #   static const napi_typedarray_type unknown_array_type =
-    #     static_cast<napi_typedarray_type>(-1);
-    # Newer clang (Apple SDK 14+) rejects this in-class initializer because
-    # -1 is outside the enum's declared range under stricter constexpr
-    # enum-range checking. The current upstream node-addon-api dropped this
-    # sentinel entirely and defaults to napi_int8_array; we do the same.
-    # The value is only used as a "no-match" return from a primitive→typed-
-    # array-type lookup that nodehun never invokes for the unmapped types.
-    #
-    # `npmConfigHook` runs as a postPatch hook and itself does both `npm ci`
-    # (which materialises node_modules) and `npm rebuild` (which compiles
-    # the native addon via node-gyp) in one go. We tell npm rebuild to skip
-    # scripts so node-gyp doesn't run yet, patch the now-present header,
-    # then drive the native build ourselves in preBuild.
-    npmRebuildFlags = (oldAttrs.npmRebuildFlags or []) ++ [ "--ignore-scripts" ];
-
-    preBuild = (oldAttrs.preBuild or "") + ''
-      if [ -f node_modules/node-addon-api/napi.h ]; then
-        substituteInPlace node_modules/node-addon-api/napi.h \
-          --replace-fail 'static_cast<napi_typedarray_type>(-1)' 'napi_int8_array'
-      fi
-      npm rebuild --offline --foreground-scripts
-    '';
-  });
-}

From 9216e1b17f1c3095419a0c2b69214842bdc518b8 Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Mon, 1 Jun 2026 14:50:25 -0700
Subject: [PATCH 08/10] octave: use gnuplot graphics toolkit to avoid fltk
 warning on stdout

---
 modules/kernels/octave/kernel.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/kernels/octave/kernel.nix b/modules/kernels/octave/kernel.nix
index aa1eb6e2..65b00e0c 100644
--- a/modules/kernels/octave/kernel.nix
+++ b/modules/kernels/octave/kernel.nix
@@ -58,6 +58,8 @@ let
 
   extraOctaveConfig = ''
     warning('off', 'Octave:gnuplot-graphics')
+    warning('off', 'Octave:fltk-graphics')
+    graphics_toolkit('gnuplot')
   '';
 
   extraOctaveConfigArgs = if extraOctaveConfig == null then "" else

From 5f58283e0c4f8d947247522f191b16ce22889755 Mon Sep 17 00:00:00 2001
From: Tom McLaughlin <tom@codedown.io>
Date: Tue, 2 Jun 2026 13:19:27 -0700
Subject: [PATCH 09/10] gnls: update to 0.1.0.4 (fixes darwin)

---
 .../go/language-server-gopls/gnls-version.nix |  2 +-
 .../kernels/go/language-server-gopls/gnls.nix | 24 +++++++++----------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/modules/kernels/go/language-server-gopls/gnls-version.nix b/modules/kernels/go/language-server-gopls/gnls-version.nix
index 6ac50715..de64febe 100644
--- a/modules/kernels/go/language-server-gopls/gnls-version.nix
+++ b/modules/kernels/go/language-server-gopls/gnls-version.nix
@@ -1 +1 @@
-"0.1.0.3"
+"0.1.0.4"
diff --git a/modules/kernels/go/language-server-gopls/gnls.nix b/modules/kernels/go/language-server-gopls/gnls.nix
index ef2fdb43..f384b594 100644
--- a/modules/kernels/go/language-server-gopls/gnls.nix
+++ b/modules/kernels/go/language-server-gopls/gnls.nix
@@ -6,28 +6,28 @@
 {
   # HASHES_START
   "aarch64-linux" = fetchzip {
-    name = "go-notebook-language-server-0.1.0.3";
+    name = "go-notebook-language-server-0.1.0.4";
     stripRoot = false;
-    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.3/go-notebook-language-server-0.1.0.3-aarch64-linux.tar.gz";
-    hash = "sha256-q2u2Iyy5cZCnxcXppZbbahtsZ+sQi1QrKLw1JDqUeJM=";
+    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.4/go-notebook-language-server-0.1.0.4-aarch64-linux.tar.gz";
+    hash = "sha256-GZG3miAdBqLKat4arB1isjMKKpnRl8m2LOYtKUBT8oM=";
   };
   "x86_64-linux" = fetchzip {
-    name = "go-notebook-language-server-0.1.0.3";
+    name = "go-notebook-language-server-0.1.0.4";
     stripRoot = false;
-    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.3/go-notebook-language-server-0.1.0.3-x86_64-linux.tar.gz";
-    hash = "sha256-Yq6AYnaYO1JIblz8d8oUdVWZb18trpr4JgkKcLN2IuM=";
+    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.4/go-notebook-language-server-0.1.0.4-x86_64-linux.tar.gz";
+    hash = "sha256-0hMofbVtiAmIRhWihDBYZ9pXy9yfpiqeBLX+L0PwreE=";
   };
   "x86_64-darwin" = fetchzip {
-    name = "go-notebook-language-server-0.1.0.3";
+    name = "go-notebook-language-server-0.1.0.4";
     stripRoot = false;
-    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.3/go-notebook-language-server-0.1.0.3-x86_64-darwin.tar.gz";
-    hash = "sha256-ovu3YFTB8vDwBp0hcFE/hV09W7vqjkC1fzKrfumXDws=";
+    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.4/go-notebook-language-server-0.1.0.4-x86_64-darwin.tar.gz";
+    hash = "sha256-8z71FB5mV4s9gW5QCBdPE6a3jRRx/OX/6JA/hX3T2Zc=";
   };
   "aarch64-darwin" = fetchzip {
-    name = "go-notebook-language-server-0.1.0.3";
+    name = "go-notebook-language-server-0.1.0.4";
     stripRoot = false;
-    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.3/go-notebook-language-server-0.1.0.3-aarch64-darwin.tar.gz";
-    hash = "sha256-9n1ExuhRLioeGfdQlLTyRCr+P0+YR4yc3BLBd9W2jww=";
+    url = "https://github.com/codedownio/go-notebook-language-server/releases/download/v0.1.0.4/go-notebook-language-server-0.1.0.4-aarch64-darwin.tar.gz";
+    hash = "sha256-cAcGaKANex4kMnYD4JZb+JeEcidkNIxj8CF3pns03gE=";
   };
   # HASHES_END
 }.${stdenv.hostPlatform.system}

From 97ba33ab2ca1f51722c2e722d6f5e7469592864f Mon Sep 17 00:00:00 2001
From: thomasjm <tom@codedown.io>
Date: Tue, 2 Jun 2026 13:36:48 -0700
Subject: [PATCH 10/10] ci: actions/checkout @v4 -> @v6

---
 .github/workflows/ci.yml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 872bcdf8..45ace8ed 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
         - Linux
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: verify-default-nix.sh
       if: "!contains(github.event.head_commit.message, 'noci')"
@@ -37,7 +37,7 @@ jobs:
         - Linux
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: nix flake check
       if: "!contains(github.event.head_commit.message, 'noci')"
@@ -60,7 +60,7 @@ jobs:
           arch: aarch64-linux
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Build .#ui_metadata_farm
       if: "!contains(github.event.head_commit.message, 'noci')"
@@ -84,7 +84,7 @@ jobs:
           arch: aarch64-linux
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Build .#sample_environments_farm
       if: "!contains(github.event.head_commit.message, 'noci')"
@@ -137,7 +137,7 @@ jobs:
         - macOS
         - Linux
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       with:
         submodules: recursive