refactor: move development inputs/outputs back to dev flake (#458)

* refactor: move development inputs/outputs back to dev flake

* ci: drop nix-fast-build

Doesn't work with Nix 2.26 yet, maybe we'll use it again some day
For now, Nix's default scheduling with a linkFarm and `nix flake check`
should be fine

.github/workflows/ci.yml

@@ -4,14 +4,16 @@ on:
   push:
     branches: [ main ]
     paths:
+      - '**.lock'
       - '**.nix'
-      - 'flake.lock'
+      - 'pkgs/**'
 
       - '.github/workflows/ci.yml'
   pull_request:
     paths:
+      - '**.lock'
       - '**.nix'
-      - 'flake.lock'
+      - 'pkgs/**'
 
       - '.github/workflows/ci.yml'
   workflow_dispatch:
@@ -33,6 +35,9 @@ jobs:
 
       - name: Install Nix
         uses: cachix/install-nix-action@V27
+        with:
+          # NOTE: Required for subflake
+          install_url: https://releases.nixos.org/nix/nix-2.26.0/install
 
       - name: Install Cachix
         uses: cachix/cachix-action@v15
@@ -42,7 +47,7 @@ jobs:
 
       - name: Run build
         run: |
-          nix run .#build-outputs -- 'packages'
+          nix build './dev#all-ports' --print-build-logs --show-trace
 
   modules:
     name: Test Modules
@@ -61,6 +66,9 @@ jobs:
 
       - name: Install Nix
         uses: cachix/install-nix-action@V27
+        with:
+          # NOTE: Required for subflake
+          install_url: https://releases.nixos.org/nix/nix-2.26.0/install
 
       - name: Install Cachix
         uses: cachix/cachix-action@v15
@@ -70,7 +78,7 @@ jobs:
 
       - name: Run tests
         run: |
-          nix run .#build-outputs -- 'checks'
+          nix flake check './dev' --print-build-logs --show-trace
 
   release-gate:
     name: Release Gate

.github/workflows/format.yml

@@ -5,6 +5,7 @@ on:
     branches: [ main ]
     paths:
       - "**.nix"
+      - "**.lock"
 
       - ".github/workflows/format.yml"
   workflow_dispatch:

.github/workflows/website.yml

@@ -4,18 +4,20 @@ on:
   push:
     branches: [main]
     paths:
-      - 'docs/**'
-      - 'CHANGELOG.md'
       - '**.lock'
       - '**.nix'
+      - 'docs/**'
+      - 'pkgs/**'
+      - 'CHANGELOG.md'
 
       - '.github/workflows/website.yml'
   pull_request:
     paths:
-      - 'docs/**'
-      - 'CHANGELOG.md'
       - '**.lock'
       - '**.nix'
+      - 'docs/**'
+      - 'pkgs/**'
+      - 'CHANGELOG.md'
 
       - '.github/workflows/website.yml'
   workflow_dispatch:
@@ -32,6 +34,9 @@ jobs:
 
       - name: Install Nix
         uses: cachix/install-nix-action@V27
+        with:
+          # NOTE: Required for subflake
+          install_url: https://releases.nixos.org/nix/nix-2.26.0/install
 
       - name: Install Cachix
         uses: cachix/cachix-action@v15
@@ -44,7 +49,7 @@ jobs:
           nix build \
             --print-build-logs \
             --show-trace \
-            '.#site'
+            './dev#site'
 
       - name: Get artifact directory
         id: find-path

dev/README.md

@@ -0,0 +1,4 @@
+> [!WARNING]  
+> This is using features from the currently unstable Nix 2.26 release.
+> ***It will not evaluate on versions prior to 2.26***.
+> It is recommended to enter a shell with it by running `nix shell 'github:NixOS/nix/refs/tags/2.26.0'`