vivid: add module

Author: arunoruto

modules/modules.nix

@@ -264,6 +264,7 @@ let
     ./programs/vim-vint.nix
     ./programs/vim.nix
     ./programs/vinegar.nix
+    ./programs/vivid.nix
     ./programs/vscode.nix
     ./programs/vscode/haskell.nix
     ./programs/pywal.nix

modules/programs/vivid.nix

@@ -0,0 +1,95 @@
+{ config, lib, pkgs, ... }:
+let yaml = pkgs.formats.yaml { };
+in with lib; {
+  meta.maintainers = with maintainers; [ arunoruto ];
+
+  options.programs.vivid = {
+    enable = mkEnableOption ''
+      vivid - A themeable LS_COLORS generator with a rich filetype datebase
+      <link xlink:href="https://github.com/sharkdp/vivid" />
+    '';
+
+    package = mkPackageOption pkgs "vivid" { };
+
+    theme = mkOption {
+      type = with types; nullOr str;
+      default = null;
+      example = "molokai";
+      description = ''
+        Color theme to enable.
+        Run `vivid themes` for a list of available themes.
+      '';
+    };
+
+    filetypes = mkOption {
+      type = yaml.type;
+      default = { };
+      example = literalExpression ''
+        {
+          core = {
+            regular_file = [ "$fi" ];
+            directory = [ "$di" ];
+          };
+          text = {
+            readme = [ "README.md" ];
+            licenses = [ "LICENSE" ];
+          };
+        }
+      '';
+      description = ''
+        Configuration written to
+        <filename>~/.config/vivid/filetypes.yml</filename>.
+        Visit <link xlink:href="https://github.com/sharkdp/vivid/tree/master/config/filetypes.yml" />
+        for a reference file.
+      '';
+    };
+
+    themes = mkOption {
+      type = types.attrsOf (yaml.type);
+      default = { };
+      example = literalExpression ''
+        {
+          mytheme = {
+            colors = {
+              blue = "0000ff";
+            };
+            core = {
+              directory = {
+                foreground = "blue";
+                font-style = "bold";
+              };
+            };
+          };
+        }
+      '';
+      description = ''
+        Theme files written to
+        <filename>~/.config/vivid/themes/<mytheme>.yml</filename>.
+        Visit <link xlink:href="https://github.com/sharkdp/vivid/tree/master/themes" />
+        for references.
+      '';
+    };
+  };
+
+  config = let
+    cfg = config.programs.vivid;
+    lsColors = builtins.readFile (pkgs.runCommand "vivid-ls-colors" { } ''
+      ${lib.getExe pkgs.vivid} generate ${cfg.theme} > $out
+    '');
+  in mkIf cfg.enable {
+    home = {
+      packages = [ cfg.package ];
+      sessionVariables = { LS_COLORS = "${lsColors}"; };
+    };
+
+    xdg.configFile = {
+      "vivid/filetypes.yml" =
+        mkIf (builtins.length (builtins.attrNames cfg.filetypes) > 0) {
+          source = yaml.generate "filetypes.yml" cfg.filetypes;
+        };
+    } // mapAttrs' (name: value:
+      nameValuePair "vivid/themes/${name}.yml" {
+        source = yaml.generate "${name}.yml" value;
+      }) cfg.themes;
+  };
+}