Update to nixos 23.11

.envrc

@@ -0,0 +1 @@
+use flake

.github/workflows/ci.yml

@@ -5,8 +5,7 @@ on:
         branches:
             - master
             - dev-1.x
-            - github-actions
-            - ci
+            - develop
     pull_request:
         branches:
             - master
@@ -18,10 +17,9 @@ jobs:
             fail-fast: false
             matrix:
                 PHP_VERSION:
-                    - "7.4"
-                    - "8.0"
                     - "8.1"
                     - "8.2"
+                    - "8.3"
                 COVERAGE: ["true", "false"]
         steps:
             - uses: actions/checkout@v3
@@ -45,8 +43,9 @@ jobs:
             fail-fast: false
             matrix:
                 PHP_VERSION:
-                    - "8.0"
                     - "8.1"
+                    - "8.2"
+                    - "8.3"
         steps:
             - uses: actions/checkout@v3
               with:
@@ -62,10 +61,9 @@ jobs:
             fail-fast: false
             matrix:
                 PHP_VERSION:
-                    - "7.4"
-                    - "8.0"
                     - "8.1"
-                    - "8.2-rc"
+                    - "8.2"
+                    - "8.3"
         steps:
             - uses: actions/checkout@v3
               with:
@@ -82,10 +80,9 @@ jobs:
             fail-fast: false
             matrix:
                 PHP_VERSION:
-                    - "7.4"
-                    - "8.0"
                     - "8.1"
-                    - "8.2-rc"
+                    - "8.2"
+                    - "8.3"
         steps:
             - uses: actions/checkout@v3
               with:
@@ -108,26 +105,62 @@ jobs:
                   TEST_PHP_EXECUTABLE: /usr/bin/php
               run: bash ./.github/scripts/docker.sh
 
-    nix:
+    nix-matrix:
         runs-on: ubuntu-latest
+        outputs:
+            matrix: ${{ steps.set-matrix.outputs.matrix }}
         steps:
-            - uses: actions/checkout@v3
-              with:
-                  submodules: recursive
-            - uses: cachix/install-nix-action@v18
-              with:
-                  nix_path: nixpkgs=channel:nixos-22.05
-            - run: nix-build
-            - run: nix-build nix/ci.nix
+            -   uses: actions/checkout@v4
+            -   uses: cachix/install-nix-action@v26
+            -   id: set-matrix
+                name: Generate Nix Matrix
+                run: |
+                    set -Eeu
+                    matrix="$(nix eval --json '.#githubActions.matrix')"
+                    echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
 
-    nix-flake:
-        runs-on: ubuntu-latest
+    nix:
+        name: "nix (${{ matrix.name }})"
+        runs-on: ${{ matrix.os }}
+        needs: nix-matrix
+        strategy:
+            matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
         steps:
-            - uses: actions/checkout@v3
-              with:
-                  submodules: recursive
-            - uses: cachix/install-nix-action@v18
-              with:
-                  nix_path: nixpkgs=channel:nixos-22.05
-            - run: nix build
-            - run: nix flake check
+            -   uses: actions/checkout@v4
+
+            -   name: Set Up Build Cache
+                uses: actions/cache@v4
+                id: nix-cache
+                with:
+                    path: /tmp/nix-store.nar
+                    key: nix-store.nar-${{ runner.os }}-${{ hashFiles('flake.lock') }}-${{ matrix.attr }}
+                    restore-keys: |
+                        nix-store.nar-${{ runner.os }}-${{ hashFiles('flake.lock') }}-${{ matrix.attr }}
+                        nix-store.nar-${{ runner.os }}-${{ hashFiles('flake.lock') }}-
+                        nix-store.nar-${{ runner.os }}-
+
+            -   uses: cachix/install-nix-action@v26
+                with:
+                    nix_path: nixpkgs=channel:nixos-23.11
+                    extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
+
+            -   name: Import Nix Store Cache
+                if: "steps.nix-cache.outputs.cache-hit == 'true'"
+                run: |
+                    nix-store --import < /tmp/nix-store.nar
+
+            -   run: sudo sysctl -w kernel.perf_event_paranoid=1
+
+            -   run: nix build -L ".#${{ matrix.attr }}"
+
+            -   name: Export Nix Store Cache
+                shell: bash
+                # partially based on https://github.com/NixOS/nix/issues/1245#issuecomment-282586759
+                run: |
+                    drv="$(nix-store -qd "$(readlink result)")"
+                    drvRefs="$( echo "$drv" | xargs nix-store -q --references )"
+                    ( echo "$drvRefs" | grep '[.]drv$' | xargs nix-store -q --outputs ;
+                      echo "$drvRefs" | grep -v '[.]drv$' ) | \
+                        xargs nix-store -r | \
+                        xargs nix-store -qR |
+                        xargs nix-store --export > /tmp/nix-store.nar

.gitignore

@@ -20,6 +20,7 @@ configure.in
 coverage.info
 *.dep
 .deps
+.direnv
 .dirstamp
 gmon*
 .idea