Merge pull request #49 from NotAShelf/feature/elixir

feat: elixir language support

extra.nix

@@ -33,6 +33,7 @@ inputs: let
         nvimCodeActionMenu.enable = true;
         trouble.enable = true;
         lspSignature.enable = true;
+        elixir.enable = isMaximal;
         rust.enable = isMaximal;
         python = isMaximal;
         clang.enable = isMaximal;

flake.lock

@@ -321,6 +321,38 @@
         "type": "github"
       }
     },
+    "elixir-ls": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1681462421,
+        "narHash": "sha256-pIwZFiCLJ0f7OXi1iTza04KSn7rpFpvUsNYrFh0FoEM=",
+        "owner": "elixir-lsp",
+        "repo": "elixir-ls",
+        "rev": "85cfc5604edeadb0a6a683c41abff60a0c959de7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "elixir-lsp",
+        "repo": "elixir-ls",
+        "type": "github"
+      }
+    },
+    "elixir-tools": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1681453321,
+        "narHash": "sha256-7QgWrdq4p5t8WVnFhL5P948JFPR0i2C06kisxl30D2U=",
+        "owner": "elixir-tools",
+        "repo": "elixir-tools.nvim",
+        "rev": "8ccb696c048eca667486ee005f4386c0db8c5e14",
+        "type": "github"
+      },
+      "original": {
+        "owner": "elixir-tools",
+        "repo": "elixir-tools.nvim",
+        "type": "github"
+      }
+    },
     "fidget-nvim": {
       "flake": false,
       "locked": {
@@ -1319,6 +1351,8 @@
         "dashboard-nvim": "dashboard-nvim",
         "diffview-nvim": "diffview-nvim",
         "dressing-nvim": "dressing-nvim",
+        "elixir-ls": "elixir-ls",
+        "elixir-tools": "elixir-tools",
         "fidget-nvim": "fidget-nvim",
         "flake-parts": "flake-parts",
         "flake-utils": "flake-utils",

flake.nix

@@ -92,22 +92,27 @@
       url = "github:neovim/nvim-lspconfig";
       flake = false;
     };
+
     lspsaga = {
       url = "github:tami5/lspsaga.nvim";
       flake = false;
     };
+
     lspkind = {
       url = "github:onsails/lspkind-nvim";
       flake = false;
     };
+
     trouble = {
       url = "github:folke/trouble.nvim";
       flake = false;
     };
+
     nvim-treesitter-context = {
       url = "github:lewis6991/nvim-treesitter-context";
       flake = false;
     };
+
     nvim-lightbulb = {
       url = "github:kosayoda/nvim-lightbulb";
       flake = false;
@@ -117,18 +122,22 @@
       url = "github:weilbith/nvim-code-action-menu";
       flake = false;
     };
+
     lsp-signature = {
       url = "github:ray-x/lsp_signature.nvim";
       flake = false;
     };
+
     null-ls = {
       url = "github:jose-elias-alvarez/null-ls.nvim";
       flake = false;
     };
+
     sqls-nvim = {
       url = "github:nanotee/sqls.nvim";
       flake = false;
     };
+
     rust-tools = {
       url = "github:simrat39/rust-tools.nvim";
       flake = false;
@@ -139,6 +148,16 @@
       flake = false;
     };
 
+    elixir-ls = {
+      url = "github:elixir-lsp/elixir-ls";
+      flake = false;
+    };
+
+    elixir-tools = {
+      url = "github:elixir-tools/elixir-tools.nvim";
+      flake = false;
+    };
+
     # Copying/Registers
     registers = {
       url = "github:tversteeg/registers.nvim";

lib/types/plugins.nix

@@ -79,6 +79,8 @@ with lib; let
     "vim-repeat"
     "smartcolumn"
     "project-nvim"
+    "elixir-ls"
+    "elixir-tools"
   ];
   # You can either use the name of the plugin or a package.
   pluginsType = with types;

modules/lsp/config.nix

@@ -19,25 +19,20 @@ in {
         [
           "nvim-lspconfig"
           "null-ls"
-          (
-            if (config.vim.autocomplete.enable && (config.vim.autocomplete.type == "nvim-cmp"))
-            then "cmp-nvim-lsp"
-            else null
-          )
-          (
-            if cfg.sql
-            then "sqls-nvim"
-            else null
-          )
         ]
-        ++ (
-          if cfg.rust.enable
-          then [
-            "crates-nvim"
-            "rust-tools"
-          ]
-          else []
-        );
+        ++ optionals (cfg.rust.enable) [
+          "crates-nvim"
+          "rust-tools"
+        ]
+        ++ optionals (cfg.elixir.enable) [
+          "elixir-ls"
+        ]
+        ++ optionals ((config.vim.autocomplete.enable) && (config.vim.autocomplete.type == "nvim-cmp")) [
+          "cmp-nvim-lsp"
+        ]
+        ++ optionals (cfg.sql) [
+          "sqls-nvim"
+        ];
 
       vim.configRC.lsp = nvim.dag.entryAnywhere ''
         ${
@@ -346,6 +341,13 @@ in {
             cmd = { "${pkgs.nodePackages.typescript-language-server}/bin/typescript-language-server", "--stdio" }
           }
         ''}
+
+        ${writeIf cfg.elixir.enable ''
+          lspconfig.elixirls.setup {
+            cmd = { "${lib.getExe pkgs.elixir-ls}" },
+            on_attach = on_attach
+          }
+        ''}
       '';
     }
   );

modules/lsp/default.nix

@@ -11,7 +11,8 @@
     ./lsp-signature
     ./lightbulb
 
-    # flutter-tools
-    ./flutter-tools-nvim
+    # language specific modules
+    ./flutter-tools-nvim # dart & flutter
+    ./elixir # elixir
   ];
 }

modules/lsp/elixir/config.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.lsp.elixir;
+in {
+  config = mkIf (cfg.enable) {
+    vim.startPlugins = [
+      "elixir-tools"
+      "plenary-nvim"
+    ];
+
+    vim.luaConfigRC.elixir-tools = nvim.dag.entryAnywhere ''
+        local elixir = require("elixir")
+        local elixirls = require("elixir.elixirls")
+
+        elixir.setup {
+          elixirls = {
+
+
+          -- alternatively, point to an existing elixir-ls installation (optional)
+          -- not currently supported by elixirls, but can be a table if you wish to pass other args `{"path/to/elixirls", "--foo"}`
+          cmd = "${lib.getExe pkgs.elixir-ls}",
+
+          -- default settings, use the `settings` function to override settings
+          settings = elixirls.settings {
+            dialyzerEnabled = true,
+            fetchDeps = false,
+            enableTestLenses = false,
+            suggestSpecs = false,
+          },
+
+          on_attach = function(client, bufnr)
+            local map_opts = { buffer = true, noremap = true}
+
+            -- run the codelens under the cursor
+            vim.keymap.set("n", "<space>r",  vim.lsp.codelens.run, map_opts)
+            -- remove the pipe operator
+            vim.keymap.set("n", "<space>fp", ":ElixirFromPipe<cr>", map_opts)
+            -- add the pipe operator
+            vim.keymap.set("n", "<space>tp", ":ElixirToPipe<cr>", map_opts)
+            vim.keymap.set("v", "<space>em", ":ElixirExpandMacro<cr>", map_opts)
+
+            -- bindings for standard LSP functions.
+            vim.keymap.set("n", "<space>df", "<cmd>lua vim.lsp.buf.format()<cr>", map_opts)
+            vim.keymap.set("n", "<space>gd", "<cmd>lua vim.diagnostic.open_float()<cr>", map_opts)
+            vim.keymap.set("n", "<space>dt", "<cmd>lua vim.lsp.buf.definition()<cr>", map_opts)
+            vim.keymap.set("n", "<space>K", "<cmd>lua vim.lsp.buf.hover()<cr>", map_opts)
+            vim.keymap.set("n", "<space>gD","<cmd>lua vim.lsp.buf.implementation()<cr>", map_opts)
+            vim.keymap.set("n", "<space>1gD","<cmd>lua vim.lsp.buf.type_definition()<cr>", map_opts)
+            -- keybinds for fzf-lsp.nvim: https://github.com/gfanto/fzf-lsp.nvim
+            -- you could also use telescope.nvim: https://github.com/nvim-telescope/telescope.nvim
+            -- there are also core vim.lsp functions that put the same data in the loclist
+            vim.keymap.set("n", "<space>gr", ":References<cr>", map_opts)
+            vim.keymap.set("n", "<space>g0", ":DocumentSymbols<cr>", map_opts)
+            vim.keymap.set("n", "<space>gW", ":WorkspaceSymbols<cr>", map_opts)
+            vim.keymap.set("n", "<leader>d", ":Diagnostics<cr>", map_opts)
+          end
+        }
+      }
+    '';
+  };
+}

modules/lsp/elixir/default.nix

@@ -0,0 +1,6 @@
+_: {
+  imports = [
+    ./config.nix
+    ./elixir-tools.nix
+  ];
+}

modules/lsp/elixir/elixir-tools.nix

@@ -0,0 +1,10 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; {
+  options.vim.lsp.elixir = {
+  };
+}

modules/lsp/module.nix

@@ -65,6 +65,10 @@ in {
       };
     };
 
+    elixir = {
+      enable = mkEnableOption "Elixir LSP";
+    };
+
     sql = mkEnableOption "SQL Language LSP";
     go = mkEnableOption "Go language LSP";
     ts = mkEnableOption "TS language LSP";

modules/treesitter/treesitter.nix

@@ -45,6 +45,8 @@ with builtins; {
           graphql
           json
           zig
+          elixir
+          heex
         ]
         ++ (optional config.vim.notes.orgmode.enable org); # add orgmode grammar if enabled
       description = ''