feat(nvim): add null ls

modules/programs/nvim/default.nix

@@ -49,14 +49,17 @@ in
         extraPackages = with pkgs; [
           alejandra
           black
+          deadnix
           isort
           jq
           nil
           nixpkgs-fmt
           nodePackages.bash-language-server
+          nodePackages.cspell
           rustfmt
           shellcheck
           shfmt
+          statix
           stylua
           sumneko-lua-language-server
           taplo

modules/programs/nvim/plugins/null-ls-nvim.lua

@@ -0,0 +1,58 @@
+local null_ls = require("null-ls")
+
+null_ls.setup({
+  sources = {
+    -- Code actions
+    null_ls.builtins.code_actions.cspell,
+    null_ls.builtins.code_actions.gitsigns,
+    null_ls.builtins.code_actions.shellcheck,
+    null_ls.builtins.code_actions.statix,
+    -- Completion
+    null_ls.builtins.completion.spell,
+    -- Diagnostics
+    null_ls.builtins.diagnostics.cspell,
+    null_ls.builtins.diagnostics.deadnix,
+    null_ls.builtins.diagnostics.shellcheck,
+    null_ls.builtins.diagnostics.statix,
+  },
+})
+
+-- disable cspell initially
+null_ls.disable("cspell")
+
+-- make sources toggle able
+require("which-key").register({
+  n = {
+    name = "null-ls",
+    c = {
+      function()
+        null_ls.toggle("cspell")
+      end,
+      "cspell",
+    },
+    g = {
+      function()
+        null_ls.toggle("gitsigns")
+      end,
+      "gitsigns",
+    },
+    s = {
+      function()
+        null_ls.toggle("shellcheck")
+      end,
+      "shellcheck",
+    },
+    S = {
+      function()
+        null_ls.toggle("statix")
+      end,
+      "statix",
+    },
+    d = {
+      function()
+        null_ls.toggle("deadnix")
+      end,
+      "deadnix",
+    },
+  },
+}, { prefix = "<leader>t" })