languages/docker: init

modules/plugins/languages/default.nix

@@ -66,6 +66,7 @@ in {
     ./fluent.nix
     ./openscad.nix
     ./jq.nix
+    ./docker.nix
 
     # This is now a hard deprecation.
     (mkRenamedOptionModule ["vim" "languages" "enableLSP"] ["vim" "lsp" "enable"])

modules/plugins/languages/docker.nix

@@ -0,0 +1,166 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: let
+  inherit (builtins) attrNames;
+  inherit (lib) genAttrs;
+  inherit (lib.meta) getExe;
+  inherit (lib.options) mkEnableOption mkOption literalExpression;
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.types) enum listOf;
+  inherit (lib.nvim.types) mkGrammarOption diagnostics;
+  inherit (lib.nvim.attrsets) mapListToAttrs;
+  inherit (lib.generators) mkLuaInline;
+
+  cfg = config.vim.languages.docker;
+
+  defaultServers = ["docker-language-server"];
+  servers = ["docker-language-server"];
+
+  defaultFormat = ["dockerfmt"];
+  formats = {
+    dockerfmt = {
+      command = getExe pkgs.dockerfmt;
+    };
+  };
+
+  defaultDiagnosticsProvider = ["hadolint"];
+  diagnosticsProviders = {
+    hadolint = {
+      config.cmd = getExe (
+        pkgs.writeShellApplication {
+          name = "hadolint";
+          runtimeInputs = [pkgs.hadolint];
+          text = "hadolint -";
+        }
+      );
+    };
+  };
+in {
+  options.vim.languages.docker = {
+    enable = mkEnableOption "Docker language support";
+    treesitter = {
+      enable =
+        mkEnableOption "Docker treesitter support"
+        // {
+          default = config.vim.languages.enableTreesitter;
+          defaultText = literalExpression "config.vim.languages.enableTreesitter";
+        };
+      package = mkGrammarOption pkgs "dockerfile";
+    };
+
+    lsp = {
+      enable =
+        mkEnableOption "Docker LSP support"
+        // {
+          default = config.vim.lsp.enable;
+          defaultText = literalExpression "config.vim.lsp.enable";
+        };
+      servers = mkOption {
+        type = listOf (enum servers);
+        default = defaultServers;
+        description = "Docker LSP server to use";
+      };
+    };
+
+    format = {
+      enable =
+        mkEnableOption "Dockerfile formatting"
+        // {
+          default = config.vim.languages.enableFormat;
+          defaultText = literalExpression "config.vim.languages.enableFormat";
+        };
+
+      type = mkOption {
+        type = listOf (enum (attrNames formats));
+        default = defaultFormat;
+        description = "Dockerfile formatter to use";
+      };
+    };
+
+    extraDiagnostics = {
+      enable =
+        mkEnableOption "extra Dockerfile diagnostics"
+        // {
+          default = config.vim.languages.enableExtraDiagnostics;
+        };
+
+      types = diagnostics {
+        langDesc = "Dockerfile";
+        inherit diagnosticsProviders;
+        inherit defaultDiagnosticsProvider;
+      };
+    };
+  };
+
+  config = mkMerge [
+    {
+      vim.autocmds = [
+        # Without this the LSP doesn't understand them correctly
+        # and there are conflicts with the YAML LSP
+        {
+          desc = "Set Docker Compose filetype";
+          event = ["BufRead" "BufNewFile"];
+          pattern = [
+            "compose.yml"
+            "compose.yaml"
+            "docker-compose.yml"
+            "docker-compose.yaml"
+          ];
+          callback = mkLuaInline ''
+            vim.bo.filetype = "dockercompose"
+          '';
+        }
+      ];
+    }
+
+    (mkIf cfg.treesitter.enable {
+      vim.treesitter = {
+        enable = true;
+        grammars = [cfg.treesitter.package];
+      };
+    })
+
+    (mkIf cfg.lsp.enable {
+      vim.lsp = {
+        presets = genAttrs cfg.lsp.servers (_: {enable = true;});
+        servers = genAttrs cfg.lsp.servers (_: {
+          filetypes = [
+            "dockerfile"
+            "dockercompose"
+          ];
+        });
+      };
+    })
+
+    (mkIf cfg.format.enable {
+      vim.formatter.conform-nvim = {
+        enable = true;
+        setupOpts = {
+          formatters_by_ft.dockerfile = cfg.format.type;
+          formatters =
+            mapListToAttrs (name: {
+              inherit name;
+              value = formats.${name};
+            })
+            cfg.format.type;
+        };
+      };
+    })
+
+    (mkIf cfg.extraDiagnostics.enable {
+      vim.diagnostics.nvim-lint = {
+        enable = true;
+        linters_by_ft.dockerfile = cfg.extraDiagnostics.types;
+        linters = mkMerge (
+          map (name: {
+            ${name} = diagnosticsProviders.${name}.config;
+          })
+          cfg.extraDiagnostics.types
+        );
+      };
+    })
+  ];
+}

modules/plugins/languages/hcl.nix

@@ -16,7 +16,7 @@
   cfg = config.vim.languages.hcl;
 
   defaultServers = ["tofu-ls"];
-  servers = ["terraform-ls" "tofu-ls"];
+  servers = ["terraform-ls" "tofu-ls" "docker-language-server"];
 
   defaultFormat = ["hclfmt"];
   formats = {