Add deluxe nix develop shell to flake.nix.

Update inputs, including Node.js 14_x → 18_x and Nixpkgs 23.05.

New method for generating `node2nix`, based on Justin’s
`composition.nix` method.

Code reorganization.

README.md

@@ -55,6 +55,66 @@ pkgs.mkShell {
 }
 ```
 
+## Nix Flakes
+
+There is a `flake.nix`. To see what the `flake.nix` provides,
+
+```
+nix flake show github:justinwoo/easy-purescript-nix --allow-import-from-derivation
+```
+
+### Deluxe `nix develop` shell
+
+To get a deluxe PureScript development shell which includes the latest
+versions of everything,
+
+```
+nix develop github:justinwoo/easy-purescript-nix#deluxe
+```
+
+### Custom `nix develop` shell
+
+Create a custom `nix develop` shell with a `flake.nix` like this for example:
+
+```nix
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
+    flake-utils.url = "github:numtide/flake-utils";
+    easy-purescript-nix.url = "github:justinwoo/easy-purescript-nix";
+  };
+
+  outputs = { nixpkgs, flake-utils, easy-purescript-nix, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        easy-ps = easy-purescript-nix.packages.${system};
+      in
+      {
+        devShells = {
+          default = pkgs.mkShell {
+            name = "purescript-custom-shell";
+            buildInputs = [
+              easy-ps.purs-0_15_8
+              easy-ps.spago
+              easy-ps.purescript-language-server
+              easy-ps.purs-tidy
+              pkgs.nodejs-18_x
+              pkgs.esbuild
+            ];
+          shellHook = ''
+            source <(spago --bash-completion-script `which spago`)
+            source <(node --completion-bash)
+            '';
+          };
+       };
+     }
+  );
+}
+```
+
+
+
 ## Why was this made?
 
 See the blog post about this here: <https://github.com/justinwoo/my-blog-posts/blob/master/posts/2018-10-24-using-purescript-easily-with-nix.md>

default.nix

@@ -146,15 +146,7 @@ let
       inherit pkgs;
     };
 
-    pulp-15_0_0 = import ./pulp/15.0.0 { inherit pkgs; };
-
-    pulp-16_0_0-0 = import ./pulp/16.0.0-0 { inherit pkgs; };
-
-    pulp-16_0_2 = import ./pulp/16.0.2 { inherit pkgs; };
-
-    pulp = pulp-16_0_2;
-
-    pulp-latest = import ./pulp/latest { inherit pkgs; };
+    pulp = import ./pulp { inherit pkgs; };
 
     purescript-language-server = import ./purescript-language-server {
       inherit pkgs;
@@ -164,9 +156,8 @@ let
       inherit pkgs;
     };
 
-    purs-backend-es-1_1_0 = import ./purs-backend-es/1.1.0 { inherit pkgs; };
+    purs-backend-es = import ./purs-backend-es { inherit pkgs; };
 
-    purs-backend-es = purs-backend-es-1_1_0;
   };
 
   buildInputs = builtins.attrValues inputs;

flake.nix

@@ -1,10 +1,45 @@
-{ inputs.utils.url = "github:numtide/flake-utils";
+{ inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  outputs = { utils, ... }:
-    utils.lib.eachDefaultSystem
+  outputs = { flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem
       (system:
-         { packages =
-             (import ./.  { pkgs = import ./pinned.nix { inherit system; }; }).inputs;
+        let
+          # TODO pinned.nix could be a flake input.nixpkgs instead.
+          pkgs = import ./pinned.nix { inherit system; };
+          packages = (import ./default.nix { inherit pkgs; }).inputs;
+        in
+         {
+           inherit packages;
+           devShells = {
+              deluxe = pkgs.mkShell {
+                name = "easy-purescript-nix-shell-deluxe";
+                buildInputs = with packages; [
+                  purs
+                  pulp
+                  psc-package
+                  purp
+                  dhall-simple
+                  spago
+                  spago2nix
+                  pscid
+                  purescript-language-server
+                  purs-tidy
+                  purty
+                  zephyr
+                  purs-backend-es
+                ] ++ [
+                  pkgs.nodejs-18_x
+                  pkgs.nodePackages.bower
+                  pkgs.esbuild
+                ];
+              shellHook = ''
+                source <(spago --bash-completion-script `which spago`)
+                source <(node --completion-bash)
+                echo -e "  \033[1measy-purescript-nix deluxe development environment\033[0m"
+                echo -e "  \033[1mSee https://discourse.purescript.org/t/recommended-tooling-for-purescript-in-2022\033[0m"
+                '';
+              };
+           };
          }
       );
 }

pinned.nix

@@ -1,6 +1,6 @@
 import (
   builtins.fetchTarball {
-    url = "https://github.com/nixos/nixpkgs/archive/212c4e8f7327324debecb32dc773bbadda08c3d8.tar.gz";
-    sha256 = "0kx4sh20s37v7w0ygxwq080iscl3a3pzjlrvvw17621si1lprcwp";
+    url = "https://github.com/NixOS/nixpkgs/archive/refs/tags/23.05.tar.gz";
+    sha256 = "10wn0l08j9lgqcw8177nh2ljrnxdrpri7bp0g7nvrsn9rkawvlbf";
   }
 )

pulp/latest/composition.nix → psa/composition.nix

@@ -2,7 +2,7 @@
 
 {pkgs ? import <nixpkgs> {
     inherit system;
-  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs-14_x"}:
+  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs_18"}:
 
 let
   nodeEnv = import ./node-env.nix {

psa/default.nix

@@ -1,20 +1,7 @@
-{ pkgs ? import <nixpkgs> { inherit system; }
-, system ? builtins.currentSystem
-, nodejs ? pkgs."nodejs-14_x"
-}:
+# How to generate the files in this directory:
+#
+#     nix run nixpkgs#node2nix -- -i <(echo '["psa"]') -c composition.nix -18
+#
+{ pkgs ? import <nixpkgs> { } }:
 
-let
-  nodeEnv = import ./node-env.nix {
-    inherit (pkgs) stdenv lib python2 runCommand writeTextFile;
-    inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
-  };
-
-  nodePackage = import ./node-packages.nix {
-    inherit (pkgs) fetchurl nix-gitignore stdenv lib fetchgit;
-    inherit nodeEnv;
-  };
-
-  source = nodePackage.sources."purescript-psa-0.8.2".src;
-in
-nodeEnv.buildNodePackage (nodePackage.args // { src = source; })
+(import ./composition.nix { inherit pkgs; }).psa