feat(nix): Add LSP documentation on nixpkgs and flake

sbulav · Oct 24, 2024 · a281e35 · a281e35
1 parent c03c90d
commit a281e35
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Showing 3 changed files with 23 additions and 10 deletions.
diff --git a/nix/modules/darwin/tools/lsp/default.nix b/nix/modules/darwin/tools/lsp/default.nix
@@ -1,5 +1,5 @@
 {
-  options,
+  inputs,
   config,
   lib,
   pkgs,
@@ -14,6 +14,7 @@ in {
   };
 
   config = mkIf cfg.enable {
+    nix.nixPath = ["nixpkgs=${inputs.nixpkgs}"];
     environment.systemPackages = with pkgs; [
       lua-language-server # LSP for lua
       marksman # LSP for markdown

diff --git a/nix/modules/nixos/tools/lsp/default.nix b/nix/modules/nixos/tools/lsp/default.nix
@@ -1,4 +1,5 @@
 {
+  inputs,
   options,
   config,
   lib,
@@ -14,6 +15,7 @@ in {
   };
 
   config = mkIf cfg.enable {
+    nix.nixPath = ["nixpkgs=${inputs.nixpkgs}"];
     environment.systemPackages = with pkgs; [
       lua-language-server # LSP for lua
       marksman # LSP for markdown

diff --git a/nvim/lua/plugins/lsp.lua b/nvim/lua/plugins/lsp.lua
@@ -122,24 +122,33 @@ return {
                 end,
                 -- manually configured servers
                 require("lspconfig")["helm_ls"].setup {},
+
                 require("lspconfig").nixd.setup {
                     cmd = { "nixd" },
                     settings = {
                         nixd = {
                             nixpkgs = {
-                                expr = "import <nixpkgs> { }",
+                                -- For flake.
+                                -- This expression will be interpreted as "nixpkgs" toplevel
+                                -- Nixd provides package, lib completion/information from it.
+                                -- Resource Usage: Entries are lazily evaluated, entire nixpkgs takes 200~300MB for just "names".
+                                -- Package documentation, versions, are evaluated by-need.
+                                expr = "import (builtins.getFlake(toString ./.)).inputs.nixpkgs { }",
                             },
                             formatting = {
                                 command = { "alejandra" }, -- or nixfmt or nixpkgs-fmt
                             },
-                            -- options = {
-                            --   nixos = {
-                            --       expr = '(builtins.getFlake "/PATH/TO/FLAKE").nixosConfigurations.CONFIGNAME.options',
-                            --   },
-                            --   home_manager = {
-                            --       expr = '(builtins.getFlake "/PATH/TO/FLAKE").homeConfigurations.CONFIGNAME.options',
-                            --   },
-                            -- },
+                            options = {
+                                nixos = {
+                                    expr = "let flake = builtins.getFlake(toString ./.); in flake.nixosConfigurations.nz.options",
+                                },
+                                home_manager = {
+                                    expr = 'let flake = builtins.getFlake(toString ./.); in flake.homeConfigurations."sab@mbp16".options',
+                                },
+                                darwin = {
+                                    expr = "let flake = builtins.getFlake(toString ./.); in flake.darwinConfigurations.mbp16.options",
+                                },
+                            },
                         },
                     },
                 },
@@ -196,6 +205,7 @@ return {
                 -- "pyright",
                 -- "black",
                 -- "marksman",
+                -- "nixd"
                 "lua-language-server",
             },
         },