home: vim: use actual lua files

Since most of the settings are actually just lua in a VimL file.

home/vim/plugin/settings/lspconfig.lua

@@ -0,0 +1,45 @@
+local lspconfig = require("lspconfig")
+local lsp = require("ambroisie.lsp")
+local utils = require("ambroisie.utils")
+
+-- Inform servers we are able to do completion, snippets, etc...
+local capabilities = require("cmp_nvim_lsp").default_capabilities()
+
+-- C/C++
+if utils.is_executable("clangd") then
+    lspconfig.clangd.setup({
+        capabilities = capabilities,
+        on_attach = lsp.on_attach,
+    })
+end
+
+-- Nix
+if utils.is_executable("nil") then
+    lspconfig.nil_ls.setup({
+        capabilities = capabilities,
+        on_attach = lsp.on_attach,
+    })
+end
+
+if utils.is_executable("rnix-lsp") then
+    lspconfig.rnix.setup({
+        capabilities = capabilities,
+        on_attach = lsp.on_attach,
+    })
+end
+
+-- Python
+if utils.is_executable("pyright") then
+    lspconfig.pyright.setup({
+        capabilities = capabilities,
+        on_attach = lsp.on_attach,
+    })
+end
+
+-- Rust
+if utils.is_executable("rust-analyzer") then
+    lspconfig.rust_analyzer.setup({
+        capabilities = capabilities,
+        on_attach = lsp.on_attach,
+    })
+end