plugins/nix-develop: init + tests (#644)

plugins/default.nix

@@ -120,6 +120,7 @@
     ./utils/neogen.nix
     ./utils/notify.nix
     ./utils/netman.nix
+    ./utils/nix-develop.nix
     ./utils/nvim-autopairs.nix
     ./utils/nvim-bqf.nix
     ./utils/nvim-colorizer.nix

plugins/utils/nix-develop.nix

@@ -0,0 +1,43 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+with lib; let
+  cfg = config.plugins.nix-develop;
+  helpers = import ../helpers.nix {inherit lib;};
+in {
+  options.plugins.nix-develop =
+    helpers.extraOptionsOptions
+    // {
+      enable = mkEnableOption "nix-develop.nvim";
+
+      package = helpers.mkPackageOption "nix-develop.nvim" pkgs.vimPlugins.nix-develop-nvim;
+
+      ignoredVariables = mkOption {
+        type = types.attrsOf types.bool;
+        default = {};
+      };
+
+      separatedVariables = mkOption {
+        type = types.attrsOf types.str;
+        default = {};
+      };
+    };
+
+  config = mkIf cfg.enable {
+    extraPlugins = [cfg.package];
+    extraConfigLua = ''
+      local __ignored_variables = ${helpers.toLuaObject cfg.ignoredVariables}
+      for ignoredVariable, shouldIgnore in ipairs(__ignored_variables) do
+      	require("nix-develop").ignored_variables[ignoredVariable] = shouldIgnore
+      end
+
+      local __separated_variables = ${helpers.toLuaObject cfg.separatedVariables}
+      for variable, separator in ipairs(__separated_variables) do
+      	require("nix-develop").separated_variables[variable] = separator
+      end
+    '';
+  };
+}

tests/test-sources/plugins/utils/nix-develop.nix

@@ -0,0 +1,17 @@
+{
+  empty = {
+    plugins.nix-develop.enable = true;
+  };
+
+  example = {
+    plugins.nix-develop = {
+      enable = true;
+      ignoredVariables = {
+        HOME = true;
+      };
+      separatedVariables = {
+        "LUA_PATH" = ":";
+      };
+    };
+  };
+}