feat(nvim): load devShells dynamically

homeManagerModules/neovim/langs/c-lang/default.nix

@@ -8,6 +8,7 @@
   inherit (pkgs.writers) writeYAML;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
 in {
   config = mkIf cfg.enable {
     xdg.configFile."clangd/config.yaml".source = writeYAML "config.yaml" {
@@ -21,8 +22,17 @@ in {
           ''
             vim.api.nvim_create_autocmd('FileType', {
                 pattern = { 'cpp', 'c' },
-                -- FIXME: load direnv here https://github.com/actionshrimp/direnv.nvim?tab=readme-ov-file#using-nvim-lspconfig
+
-                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+                callback = function()
+                    vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                    if (devShells['c-lang'] == nil) then
+                        devShells['c-lang'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#c-lang'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
             });
           '';
 
@@ -40,10 +50,12 @@ in {
 
                 lsp.cmake.setup({
                     capabilities = default_capabilities,
+                    autostart = false,
                 });
 
                 lsp.clangd.setup({
                     capabilities = default_capabilities,
+                    autostart = false,
 
                     handlers = require('lsp-status').extensions.clangd.setup(),
 

homeManagerModules/neovim/langs/csharp/default.nix

@@ -10,19 +10,11 @@ self: {
   inherit (lib) mkIf;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
 in {
   config = mkIf cfg.enable {
     programs = {
       neovim = {
-        extraLuaConfig =
-          # lua
-          ''
-            vim.api.nvim_create_autocmd('FileType', {
-                pattern = { 'cs' },
-                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
-            });
-          '';
-
         plugins = [
           {
             plugin = buildPlugin "roslyn-nvim" vimplugin-roslyn-nvim-src;
@@ -38,6 +30,7 @@ in {
                     end,
                 });
 
+                local startRoslyn = function()
                     require('roslyn').setup({
                         config = {
                             capabilities = require('cmp_nvim_lsp').default_capabilities(),
@@ -66,6 +59,25 @@ in {
 
                         exe = 'Microsoft.CodeAnalysis.LanguageServer',
                     });
+                end;
+
+                vim.api.nvim_create_autocmd('FileType', {
+                    pattern = { 'cs' },
+
+                    callback = function()
+                        vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                        if (devShells['csharp'] == nil) then
+                            devShells['csharp'] = 1;
+
+                            require('nix-develop').nix_develop({'${flakeEnv}#csharp'});
+                            startRoslyn();
+
+                            os.execute('sleep 1')
+                            vim.cmd[[e]]; -- reload to attach on current file
+                        end
+                    end,
+                });
               '';
           }
         ];

homeManagerModules/neovim/langs/default.nix

@@ -30,6 +30,9 @@ in {
         mkBefore
         # lua
         ''
+          -- Init object to keep track of loaded devShells
+          local devShells = {};
+
           -- Add formatting cmd
           vim.api.nvim_create_user_command(
               'Format',
@@ -60,6 +63,7 @@ in {
             # lsp plugins
             nvim-lspconfig
             lsp-status-nvim
+            nix-develop-nvim
             # completion plugins
             cmp-buffer
             cmp-nvim-lsp

homeManagerModules/neovim/langs/json/default.nix

@@ -6,6 +6,7 @@
   inherit (lib) mkIf;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
 in {
   config = mkIf cfg.enable {
     programs = {
@@ -14,13 +15,18 @@ in {
           # lua
           ''
             vim.api.nvim_create_autocmd('FileType', {
-                pattern = 'yaml',
+                pattern = { 'json', 'yaml' },
-                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
-            });
 
-            vim.api.nvim_create_autocmd('FileType', {
+                callback = function()
-                pattern = 'json',
+                    vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
-                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+
+                    if (devShells['json'] == nil) then
+                        devShells['json'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#json'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
             });
 
             local lsp = require('lspconfig');
@@ -28,10 +34,12 @@ in {
 
             lsp.jsonls.setup({
                 capabilities = default_capabilities,
+                autostart = false,
             });
 
             lsp.yamlls.setup({
                 capabilities = default_capabilities,
+                autostart = false,
 
                 settings = {
                     yaml = {

homeManagerModules/neovim/langs/lua/default.nix

@@ -24,7 +24,17 @@ in {
 
                 vim.api.nvim_create_autocmd('FileType', {
                     pattern = 'lua',
-                    command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+
+                    callback = function()
+                        vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                        if (devShells['lua'] == nil) then
+                            devShells['lua'] = 1;
+
+                            require('nix-develop').nix_develop({'${flakeEnv}#lua'});
+                            vim.cmd[[LspStart]];
+                        end
+                    end,
                 });
 
                 -- IMPORTANT: make sure to setup neodev BEFORE lspconfig
@@ -39,6 +49,7 @@ in {
 
                 require('lspconfig').lua_ls.setup({
                     capabilities = default_capabilities,
+                    autostart = false,
                 });
               '';
           }

homeManagerModules/neovim/langs/markdown/default.nix

@@ -12,6 +12,7 @@ self: {
   inherit (lib) concatStringsSep mkIf;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
   isServer = osConfig.roles.server.sshd.enable or false;
 
   githubCSS = pkgs.fetchurl {
@@ -25,10 +26,26 @@ in {
         extraLuaConfig =
           # lua
           ''
+            vim.api.nvim_create_autocmd('FileType', {
+                pattern = { 'markdown', 'tex' },
+
+                callback = function()
+                    vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                    if (devShells['markdown'] == nil) then
+                        devShells['markdown'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#markdown'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
+            });
+
             local lsp = require('lspconfig');
 
             lsp.texlab.setup({
                 capabilities = require('cmp_nvim_lsp').default_capabilities(),
+                autostart = false,
 
                 settings = {
                     texlab = {
@@ -80,12 +97,6 @@ in {
             in
               # lua
               ''
-                --
-                vim.api.nvim_create_autocmd('FileType', {
-                    pattern = 'tex',
-                    command = 'setlocal ts=4 sw=4 sts=0 expandtab',
-                });
-
                 vim.g.knap_settings = {
                     -- HTML
                     htmloutputext = 'html',

homeManagerModules/neovim/langs/rust/default.nix

@@ -1,36 +1,37 @@
 {
   config,
   lib,
-  pkgs,
   ...
 }: let
-  inherit (lib) attrValues mkIf;
+  inherit (lib) mkIf;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
 in {
   config = mkIf cfg.enable {
     programs = {
       neovim = {
-        extraPackages = attrValues {
-          inherit
-            (pkgs)
-            cargo
-            rustc
-            rust-analyzer
-            rustfmt
-            ;
-        };
-
         extraLuaConfig =
           # lua
           ''
             vim.api.nvim_create_autocmd('FileType', {
                 pattern = { 'rust' },
-               command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+
+                callback = function()
+                    vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                    if (devShells['rust'] == nil) then
+                        devShells['rust'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#rust'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
             });
 
             require('lspconfig').rust_analyzer.setup({
                 capabilities = require('cmp_nvim_lsp').default_capabilities(),
+                autostart = false,
             });
           '';
       };

homeManagerModules/neovim/langs/web/default.nix

@@ -10,6 +10,7 @@ self: {
   inherit (lib) mkIf;
 
   cfg = config.programs.neovim;
+  flakeEnv = config.programs.bash.sessionVariables.FLAKE;
 in {
   config = mkIf cfg.enable {
     programs = {
@@ -21,12 +22,32 @@ in {
           ''
             vim.api.nvim_create_autocmd('FileType', {
                 pattern = { 'javascript', 'javascriptreact', 'javascript.jsx', 'typescript', 'typescriptreact', 'typescript.tsx', 'css', 'scss' },
-                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+
+                callback = function()
+                    vim.cmd[[setlocal ts=4 sw=4 sts=0 expandtab]];
+
+                    if (devShells['web'] == nil) then
+                        devShells['web'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#web'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
             });
 
             vim.api.nvim_create_autocmd('FileType', {
                 pattern = 'html',
-                command = 'setlocal ts=4 sw=4 expandtab',
+
+                callback = function()
+                    vim.cmd[[setlocal ts=4 sw=4 expandtab]];
+
+                    if (devShells['web'] == nil) then
+                        devShells['web'] = 1;
+
+                        require('nix-develop').nix_develop({'${flakeEnv}#web'});
+                        vim.cmd[[LspStart]];
+                    end
+                end,
             });
 
             vim.api.nvim_create_autocmd('FileType', {
@@ -40,6 +61,7 @@ in {
 
             tsserver.setup({
                 capabilities = default_capabilities,
+                autostart = false,
 
                 handlers = {
                     -- format error code with better error message
@@ -52,6 +74,7 @@ in {
 
             lsp.eslint.setup({
                 capabilities = default_capabilities,
+                autostart = false,
 
                 -- auto-save
                 on_attach = function(client, bufnr)
@@ -102,6 +125,7 @@ in {
 
             lsp.cssls.setup({
                 capabilities = default_capabilities,
+                autostart = false,
 
                 settings = {
                     css = {
@@ -118,6 +142,7 @@ in {
 
             lsp.somesass_ls.setup({
                 capabilities = default_capabilities,
+                autostart = false,
             });
             lsp.somesass_ls.manager.config.settings = {
                 somesass = {
@@ -134,6 +159,8 @@ in {
 
             lsp.html.setup({
                 capabilities = html_caps,
+                autostart = false,
+
                 settings = {
                     configurationSection = { "html", "css", "javascript" },
                     embeddedLanguages = {
@@ -162,6 +189,7 @@ in {
               # lua
               ''
                 local packageInfo = require('package-info');
+
                 packageInfo.setup({
                     hide_up_to_date = true,
                     package_manager = 'npm',
@@ -169,6 +197,7 @@ in {
 
                 vim.api.nvim_create_autocmd({ 'BufRead', 'BufNewFile' }, {
                     pattern = { 'package.json' },
+
                     callback = function()
                         packageInfo.show({ force = true });
                     end,

lib/flake/default.nix

@@ -19,6 +19,15 @@ inputs: rec {
         {
           inherit cudaSupport;
           allowUnfree = true;
+
+          # FIXME: Roslyn-ls uses dotnet6 https://github.com/NixOS/nixpkgs/blob/d3c42f187194c26d9f0309a8ecc469d6c878ce33/pkgs/by-name/ro/roslyn-ls/package.nix#L21
+          permittedInsecurePackages =
+            [
+              "dotnet-core-combined"
+              "dotnet-sdk-6.0.428"
+              "dotnet-sdk-wrapped-6.0.428"
+            ]
+            ++ (cfg.config.permittedInsecurePackages or []);
         }
         // (cfg.config or {});
     };

modules/base/packages/default.nix

@@ -22,13 +22,6 @@ in {
           ;
       });
 
-    # FIXME: Roslyn-ls uses dotnet6 https://github.com/NixOS/nixpkgs/blob/d3c42f187194c26d9f0309a8ecc469d6c878ce33/pkgs/by-name/ro/roslyn-ls/package.nix#L21
-    nixpkgs.config.permittedInsecurePackages = [
-      "dotnet-core-combined"
-      "dotnet-sdk-6.0.428"
-      "dotnet-sdk-wrapped-6.0.428"
-    ];
-
     environment.systemPackages =
       (optional (cfg.user != "nixos") (self.inputs.nurl.packages.${pkgs.system}.default.overrideAttrs {
         postInstall = ''