modules: add lspconfig

flake.lock

@@ -133,17 +133,16 @@
     "lspsaga-nvim": {
       "flake": false,
       "locked": {
-        "lastModified": 1665291018,
+        "lastModified": 1713695968,
-        "narHash": "sha256-jkoEP5jeIZDAK/27gpNTXtW10/Ev9nB5RqUahPhja2Y=",
+        "narHash": "sha256-DBfYJqVJ2zgHY3OI0ZirRn7kr34d5Gj9hi0K+UvuUdg=",
         "owner": "glepnir",
         "repo": "lspsaga.nvim",
-        "rev": "f33bc99d0ed3ed691a58b3339decf4e1933c3f9e",
+        "rev": "f20985499cd8ff0fbbfe8e7c770428ef764fc3be",
         "type": "github"
       },
       "original": {
         "owner": "glepnir",
         "repo": "lspsaga.nvim",
-        "rev": "f33bc99d0ed3ed691a58b3339decf4e1933c3f9e",
         "type": "github"
       }
     },

flake.nix

@@ -71,7 +71,7 @@
 
     # https://github.com/glepnir/lspsaga.nvim
     lspsaga-nvim = {
-      url = "github:glepnir/lspsaga.nvim?rev=f33bc99d0ed3ed691a58b3339decf4e1933c3f9e";
+      url = "github:glepnir/lspsaga.nvim";
       flake = false;
     };
 
@@ -257,6 +257,9 @@
             hop-nvim = { };
             telescope-nvim = { };
             nvim-cmp = { };
+            lspconfig.languageServerConfigs = {
+              nil_ls = { };
+            };
           };
 
           plugins = with prev.nix2lua.lib; {

lib/vim.nix

@@ -36,4 +36,7 @@ with nix2lua.lib;
    */
   api.nvim_create_autocmd = event: opts:
     call "vim.api.nvim_create_autocmd" [ event opts ];
+
+  api.nvim_create_augroup = name: opts:
+    call "vim.api.nvim_create_augroup" [ name opts ];
 }

modules/lspconfig.nix

@@ -0,0 +1,61 @@
+{ nix2lua, vim, lib, ... }:
+
+with nix2lua.lib;
+
+let
+  defaultDiagnosticKeymaps = [
+    { mode = "n"; bind = "<space>e"; command = raw "vim.diagnostic.open_float"; }
+    { mode = "n"; bind = "[d"; command = raw "vim.diagnostic.goto_prev"; }
+    { mode = "n"; bind = "]d"; command = raw "vim.diagnostic.goto_next"; }
+    { mode = "n"; bind = "<space>q"; command = raw "vim.diagnostic.setloclist"; }
+  ];
+
+  defaultKeymaps = [
+    { mode = "n"; bind = "gD"; command = raw "vim.lsp.buf.declaration"; }
+    { mode = "n"; bind = "gd"; command = raw "vim.lsp.buf.definition"; }
+    { mode = "n"; bind = "K"; command = raw "vim.lsp.buf.hover"; }
+    { mode = "n"; bind = "gi"; command = raw "vim.lsp.buf.implementation"; }
+    { mode = "n"; bind = "gr"; command = raw "vim.lsp.buf.references"; }
+    { mode = "n"; bind = "gy"; command = raw "vim.lsp.buf.type_definition"; }
+    { mode = "n"; bind = "<C-k>"; command = raw "vim.lsp.buf.signature_help"; }
+    { mode = "n"; bind = "<localleader>n"; command = raw "vim.lsp.buf.rename"; }
+    { mode = [ "n" "v" ]; bind = "<localleader>a"; command = raw "vim.lsp.buf.code_action"; }
+  ];
+
+in
+
+{ languageServerConfigs ? { }
+, diagnosticKeymaps ? defaultDiagnosticKeymaps
+, keymaps ? defaultKeymaps
+}:
+
+{
+  # dependencies
+  nvim-lspconfig = lib.flatten [
+    (local (set "lspconfig" (require "lspconfig")))
+
+    (lib.flip lib.mapAttrsToList languageServerConfigs (ls: lsConfigs:
+      pipe [
+        (var "lspconfig")
+        (var ls)
+        (call "setup"
+          (if builtins.isAttrs lsConfigs then lsConfigs
+          else { }))
+      ]
+    ))
+
+    (map vim.keymap.set diagnosticKeymaps)
+
+    (vim.api.nvim_create_autocmd "LspAttach" {
+      group = vim.api.nvim_create_augroup "UserLspConfig" { };
+      callback = lambda [ "ev" ]
+        (lib.flatten [
+
+          (local (set "opts" { buffer = pipe1 (var "ev") (var "buf"); }))
+
+          (lib.flip map keymaps (keymap:
+            vim.keymap.set (keymap // { opts = var "opts"; })))
+        ]);
+    })
+  ];
+}