add helper function for language specific plugins

home/private_dot_config/nvim/lua/config/autocmds.lua

@@ -10,3 +10,9 @@ vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
   pattern = { "*.md" },
   command = "set conceallevel=0",
 })
+
+-- make .roc files have the correct filetype
+vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
+  pattern = { "*.roc" },
+  command = "set filetype=roc",
+})

home/private_dot_config/nvim/lua/plugins/language/go.lua

@@ -1,9 +1,5 @@
-if not vim.fn.executable("go") then
-  return
-end
-
 -- adapted from https://www.lazyvim.org/extras/lang/go
-return {
+return require("util").if_exe("go", {
   {
     "nvim-treesitter/nvim-treesitter",
     opts = function(_, opts)
@@ -93,4 +89,4 @@ return {
       vim.list_extend(opts.ensure_installed, { "goimports", "gofumpt", "gomodifytags", "impl", "delve" })
     end,
   },
-}
+})

home/private_dot_config/nvim/lua/plugins/language/misc.lua

@@ -1,4 +1,3 @@
 return {
-  { "alaviss/nim.nvim" },
   { "raivivek/vim-snakemake" },
 }

home/private_dot_config/nvim/lua/plugins/language/nim.lua

@@ -1,9 +1,8 @@
-if not vim.fn.executable("nim") then
-  return
-end
+local util = require("util")
 
-return {
-  require("util").setup_lang({ treesitter = { "nim", "nim_format_string" } }),
+return util.if_exe("nim", {
+  util.setup_lang({ treesitter = { "nim", "nim_format_string" } }),
+  { "alaviss/nim.nvim" },
   {
     "neovim/nvim-lspconfig",
     opts = {
@@ -14,4 +13,4 @@ return {
       },
     },
   },
-}
+})

home/private_dot_config/nvim/lua/plugins/language/nix.lua

@@ -1,9 +1,6 @@
-if not vim.fn.executable("nix") then
-  return
-end
-
-return {
-  require("util").setup_lang({ treesitter = { "nix" } }),
+local util = require("util")
+return util.if_exe("nix", {
+  util.setup_lang({ treesitter = { "nix" } }),
   {
     "neovim/nvim-lspconfig",
     opts = {
@@ -17,4 +14,4 @@ return {
       },
     },
   },
-}
+})

home/private_dot_config/nvim/lua/plugins/language/nu.lua

@@ -1,11 +1,7 @@
-if not vim.fn.executable("nu") then
-  return
-end
-
-return {
+return require("util").if_exe("nu", {
   "nvim-treesitter/nvim-treesitter",
   dependencies = {
     { "nushell/tree-sitter-nu" },
   },
   build = ":TSUpdate",
-}
+})

home/private_dot_config/nvim/lua/plugins/language/roc.lua

@@ -1,24 +1,4 @@
-if not vim.fn.executable("roc") then
-  return
-end
-
--- make .roc files have the correct filetype
-vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
-  pattern = { "*.roc" },
-  command = "set filetype=roc",
-})
-
--- -- add roc tree-sitter
--- local parsers = require("nvim-treesitter.parsers").get_parser_configs()
---
--- parsers.roc = {
---   install_info = {
---     url = "https://github.com/faldor20/tree-sitter-roc",
---     files = { "src/parser.c", "src/scanner.c" },
---   },
--- }
-
-return {
+return require("util").if_exe("roc", {
   { "nvim-treesitter/nvim-treesitter", opts = { ensure_installed = { "roc" } } },
   {
     "neovim/nvim-lspconfig",
@@ -30,4 +10,4 @@ return {
       },
     },
   },
-}
+})

home/private_dot_config/nvim/lua/plugins/language/rust.lua

@@ -1,9 +1,5 @@
-if not vim.fn.executable("rust") then
-  return
-end
-
 -- adapted from https://www.lazyvim.org/extras/lang/rust
-return {
+return require("util").if_exe("rust", {
   {
     "hrsh7th/nvim-cmp",
     opts = function(_, opts)
@@ -100,4 +96,4 @@ return {
       },
     },
   },
-}
+})

home/private_dot_config/nvim/lua/plugins/language/zig.lua

@@ -1,9 +1,5 @@
-if not vim.fn.executable("zig") then
-  return
-end
-
 -- adapted from https://www.lazyvim.org/extras/lang/rust
-return {
+return require("util").if_exe("zig", {
   {
     "nvim-treesitter/nvim-treesitter",
     opts = function(_, opts)
@@ -21,4 +17,4 @@ return {
       },
     },
   },
-}
+})

home/private_dot_config/nvim/lua/util/init.lua

@@ -25,6 +25,14 @@ local function setup_lang(defs)
   }
 end
 
+local function if_exe(exe, deps)
+  if vim.fn.executable(exe) == 0 then
+    return {}
+  end
+  return deps
+end
+
 return {
   setup_lang = setup_lang,
+  if_exe = if_exe,
 }