feat(neovim): setup nixfmt & nix-linter

nix-linter setup doesn't seem to fully work yet

home/editors/lsp.nix

@@ -19,6 +19,13 @@
 
     # linters & formatters
     nodePackages.eslint
+    # TODO uses custom script until json support is fixed
+    (pkgs.writeScriptBin "nix-linter" ''
+      echo '['
+      ${nix-linter}/bin/nix-linter --json-stream "$1" | sed '$!s/$/,/'
+      echo ']'
+    '')
+    nixfmt
     # nodePackages.stylelint
     nodePackages.prettier
   ];

home/editors/neovim/lsp/lsp.lua

@@ -61,6 +61,7 @@ config.diagnosticls.setup{
     "json",
     "yaml",
     "markdown",
+    "nix",
     "html",
     "css"
   },
@@ -117,6 +118,19 @@ config.diagnosticls.setup{
           warning = "warning",
         },
       },
+      ["nix-linter"] = {
+        -- TODO uses custom script until json support is fixed
+        command = "nix-linter",
+        sourceName = "nix-linter",
+        debounce = 50,
+        parseJson = {
+          line = "pos.spanBegin.sourceLine",
+          column = "pos.spanBegin.sourceColumn",
+          endLine = "pos.spanEnd.sourceLine",
+          endColumn = "pos.spanEnd.sourceColumn",
+          message = "${description}",
+        },
+      },
     },
     filetypes = {
       javascript = {"eslint"},
@@ -126,6 +140,7 @@ config.diagnosticls.setup{
       ["typescript.jsx"] = {"eslint"},
       typescriptreact = {"eslint"},
       css = {"stylelint"},
+      nix = {"nix-linter"},
     },
     formatters = {
       eslint = {
@@ -159,6 +174,9 @@ config.diagnosticls.setup{
         },
         rootPatterns = {".prettierrc.json", ".git"},
       },
+      nixfmt = {
+        command = "nixfmt",
+      },
     },
     formatFiletypes = {
       javascript = {"eslint"},