ci: migrate to nix

.github/workflows/quality.yaml

@@ -26,6 +26,7 @@ jobs:
               - '*.lua'
               - '.luarc.json'
               - '*.toml'
+              - 'vim.yaml'
             markdown:
               - '*.md'
 
@@ -36,11 +37,8 @@ jobs:
     if: ${{ needs.changes.outputs.lua == 'true' }}
     steps:
       - uses: actions/checkout@v4
-      - uses: JohnnyMorganz/stylua-action@v4
+      - uses: cachix/install-nix-action@v31
-        with:
+      - run: nix develop --command stylua --check lua spec
-          token: ${{ secrets.GITHUB_TOKEN }}
-          version: 2.1.0
-          args: --check lua spec
 
   lua-lint:
     name: Lua Lint Check
@@ -49,11 +47,8 @@ jobs:
     if: ${{ needs.changes.outputs.lua == 'true' }}
     steps:
       - uses: actions/checkout@v4
-      - name: Lint with Selene
+      - uses: cachix/install-nix-action@v31
-        uses: NTBBloodbath/selene-action@v1.0.0
+      - run: nix develop --command selene --display-style quiet .
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          args: --display-style quiet .
 
   lua-typecheck:
     name: Lua Type Check
@@ -74,15 +69,5 @@ jobs:
     if: ${{ needs.changes.outputs.markdown == 'true' }}
     steps:
       - uses: actions/checkout@v4
-      - name: Setup pnpm
+      - uses: cachix/install-nix-action@v31
-        uses: pnpm/action-setup@v4
+      - run: nix develop --command prettier --check .
-        with:
-          version: 8
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-      - name: Install prettier
-        run: pnpm add -g prettier@3.1.0
-      - name: Check markdown formatting with prettier
-        run: prettier --check .

selene.toml

@@ -4,3 +4,4 @@ exclude = [".direnv/*"]
 [lints]
 mixed_table = 'allow'
 unused_variable = 'allow'
+bad_string_escape = 'allow'

vim.toml

@@ -1,36 +0,0 @@
-[selene]
-base = "lua51"
-name = "vim"
-
-[vim]
-any = true
-
-[jit]
-any = true
-
-[bit]
-any = true
-
-[assert]
-any = true
-
-[a]
-any = true
-
-[describe]
-any = true
-
-[it]
-any = true
-
-[before_each]
-any = true
-
-[after_each]
-any = true
-
-[spy]
-any = true
-
-[stub]
-any = true

vim.yaml

@@ -0,0 +1,24 @@
+---
+base: lua51
+name: vim
+lua_versions:
+  - luajit
+globals:
+  vim:
+    any: true
+  jit:
+    any: true
+  assert:
+    any: true
+  describe:
+    any: true
+  it:
+    any: true
+  before_each:
+    any: true
+  after_each:
+    any: true
+  spy:
+    any: true
+  stub:
+    any: true