feat(pkgs/Profpatsch/alacritty): init dark mode dbus daemon r/8996

A simple dbus daemon that writes the alacritty config to
`~/.config/alacritty/alacritty-colors-autogen.toml` on startup and
whenever a change between dark/light mode is requested.

Alacritty only implements an config file isync watcher, no SIGHUP
handler or similar, so we have to actually write the config file lol.

This is all a little glue-y, but idk, whatever.

Further reading & inspo:

https://github.com/alacritty/alacritty/issues/5999
https://www.christianfosli.com/posts/2024-on-colorscheme-changed/
https://github.com/christianfosli/on-colorscheme-changed

Change-Id: Iac4eb9d85679dc87e28e57d68384645b3b91d08a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12870
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

9 files changed, 464 insertions, 7 deletions

diff --git a/users/Profpatsch/alacritty-change-color-scheme/.gitignore b/users/Profpatsch/alacritty-change-color-scheme/.gitignore
new file mode 100644
index 000000000000..97e89a2d684f
--- /dev/null
+++ b/users/Profpatsch/alacritty-change-color-scheme/.gitignore
@@ -0,0 +1,2 @@
+/node_modules/
+/result
diff --git a/users/Profpatsch/alacritty-change-color-scheme/alacritty-change-color-scheme.js b/users/Profpatsch/alacritty-change-color-scheme/alacritty-change-color-scheme.js
new file mode 100644
index 000000000000..a7a76c304356
--- /dev/null
+++ b/users/Profpatsch/alacritty-change-color-scheme/alacritty-change-color-scheme.js
@@ -0,0 +1,136 @@
+// Step 3: Create the script
+const dbus = require('dbus-native');
+const fs = require('fs');
+const assert = require('assert');
+
+const programName = process.argv[1];
+let themeDir = process.argv[2];
+// read the dark alacritty theme file as first argument
+let darkThemeName = process.argv[3] ?? 'alacritty_0_12';
+// read the light alacritty theme file as second argument
+let lightThemeName = process.argv[4] ?? 'dayfox';
+assert(themeDir, 'Theme directory is required');
+
+const darkTheme = getThemePathSync(darkThemeName);
+const lightTheme = getThemePathSync(lightThemeName);
+
+console.log(`Dark theme: ${darkTheme}`);
+console.log(`Light theme: ${lightTheme}`);
+
+// Connect to the user session bus
+const bus = dbus.sessionBus();
+
+// set XDG_CONFIG_HOME if it's not set
+if (!process.env.XDG_CONFIG_HOME) {
+  process.env.XDG_CONFIG_HOME = process.env.HOME + '/.config';
+}
+
+function getThemePathSync(theme) {
+  const path = `${themeDir}/${theme}.toml`;
+  const absolutePath = fs.realpathSync(path);
+  assert(fs.existsSync(absolutePath), `Theme file not found: ${absolutePath}`);
+  return absolutePath;
+}
+
+// write new color scheme
+function writeAlacrittyColorConfig(cs, theme) {
+  console.log(`Writing color scheme ${cs} with theme ${theme}`);
+  fs.writeFileSync(
+    process.env.XDG_CONFIG_HOME + '/alacritty/alacritty-colors-autogen.toml',
+    `# !! THIS FILE IS GENERATED BY ${programName}
+general.import = ["${theme}"]`,
+    'utf8',
+  );
+}
+
+// get the current value of the color scheme from dbus
+function getColorScheme() {
+  return new Promise((resolve, reject) => {
+    bus
+      .getService('org.freedesktop.portal.Desktop')
+      .getInterface(
+        '/org/freedesktop/portal/desktop',
+        'org.freedesktop.portal.Settings',
+        (err, iface) => {
+          if (err) {
+            reject(`error getting interface: ${err}`);
+            return;
+          }
+
+          iface.ReadOne(
+            'org.gnome.desktop.interface',
+            'color-scheme',
+            (err, [_, [value]]) => {
+              if (err) {
+                reject(err);
+                return;
+              }
+
+              resolve(value);
+            },
+          );
+        },
+      );
+  });
+}
+
+// Define the callback function
+function onColorSchemeChanged(cs) {
+  // only change the color scheme if it's different from the previous one
+  let previous = null;
+  if (previous === cs) {
+    console.log(`Color scheme already set to ${cs}`);
+    return;
+  }
+  previous = cs;
+
+  console.log(`Color scheme changed to ${cs}`);
+  writeAlacrittyColorConfig(cs, cs === 'prefer-dark' ? darkTheme : lightTheme);
+}
+
+function listenForColorschemeChange() {
+  return new Promise((resolve, reject) => {
+    bus
+      .getService('org.freedesktop.portal.Desktop')
+      .getInterface(
+        '/org/freedesktop/portal/desktop',
+        'org.freedesktop.portal.Settings',
+        (err, iface) => {
+          if (err) {
+            reject(`error getting interface: ${err}`);
+          }
+
+          // Listen for SettingChanged signals
+          iface.on('SettingChanged', (interfaceName, key, [_, [newValue]]) => {
+            if (
+              interfaceName === 'org.gnome.desktop.interface' &&
+              key == 'color-scheme'
+            ) {
+              onColorSchemeChanged(newValue);
+            }
+          });
+
+          console.log('Listening for color scheme changes...');
+        },
+      );
+  });
+}
+
+async function main() {
+  // get the current color scheme
+  const currentColorScheme = await getColorScheme();
+  console.log(`Current color scheme: ${currentColorScheme}`);
+
+  // write the color scheme
+  writeAlacrittyColorConfig(
+    currentColorScheme,
+    currentColorScheme === 'prefer-dark' ? darkTheme : lightTheme,
+  );
+
+  // listen for color scheme changes
+  await listenForColorschemeChange();
+}
+
+main().catch(err => {
+  console.error(err);
+});
diff --git a/users/Profpatsch/alacritty-change-color-scheme/default.nix b/users/Profpatsch/alacritty-change-color-scheme/default.nix
new file mode 100644
index 000000000000..79cc26e4e13e
--- /dev/null
+++ b/users/Profpatsch/alacritty-change-color-scheme/default.nix
@@ -0,0 +1,3 @@
+{ depot, pkgs, ... }:
+
+depot.users.Profpatsch.napalm.buildPackage ./. { }
diff --git a/users/Profpatsch/alacritty-change-color-scheme/package-lock.json b/users/Profpatsch/alacritty-change-color-scheme/package-lock.json
new file mode 100644
index 000000000000..38e2b437c432
--- /dev/null
+++ b/users/Profpatsch/alacritty-change-color-scheme/package-lock.json
@@ -0,0 +1,250 @@
+{
+  "name": "alacritty-change-color-scheme",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "alacritty-change-color-scheme",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "dbus-native": "^0.4.0"
+      }
+    },
+    "node_modules/abstract-socket": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/abstract-socket/-/abstract-socket-2.1.1.tgz",
+      "integrity": "sha512-YZJizsvS1aBua5Gd01woe4zuyYBGgSMeqDOB6/ChwdTI904KP6QGtJswXl4hcqWxbz86hQBe++HWV0hF1aGUtA==",
+      "deprecated": "Package no longer supported. Contact Support at https://www.npmjs.com/support for more info.",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "dependencies": {
+        "bindings": "^1.2.1",
+        "nan": "^2.12.1"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "file-uri-to-path": "1.0.0"
+      }
+    },
+    "node_modules/dbus-native": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/dbus-native/-/dbus-native-0.4.0.tgz",
+      "integrity": "sha512-i3zvY3tdPEOaMgmK4riwupjDYRJ53rcE1Kj8rAgnLOFmBd0DekUih59qv8v+Oyils/U9p+s4sSsaBzHWLztI+Q==",
+      "license": "MIT",
+      "dependencies": {
+        "event-stream": "^4.0.0",
+        "hexy": "^0.2.10",
+        "long": "^4.0.0",
+        "optimist": "^0.6.1",
+        "put": "0.0.6",
+        "safe-buffer": "^5.1.1",
+        "xml2js": "^0.4.17"
+      },
+      "bin": {
+        "dbus2js": "bin/dbus2js.js"
+      },
+      "optionalDependencies": {
+        "abstract-socket": "^2.0.0"
+      }
+    },
+    "node_modules/duplexer": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.2.tgz",
+      "integrity": "sha512-jtD6YG370ZCIi/9GTaJKQxWTZD045+4R4hTk/x1UyoqadyJ9x9CgSi1RlVDQF8U2sxLLSnFkCaMihqljHIWgMg==",
+      "license": "MIT"
+    },
+    "node_modules/event-stream": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/event-stream/-/event-stream-4.0.1.tgz",
+      "integrity": "sha512-qACXdu/9VHPBzcyhdOWR5/IahhGMf0roTeZJfzz077GwylcDd90yOHLouhmv7GJ5XzPi6ekaQWd8AvPP2nOvpA==",
+      "license": "MIT",
+      "dependencies": {
+        "duplexer": "^0.1.1",
+        "from": "^0.1.7",
+        "map-stream": "0.0.7",
+        "pause-stream": "^0.0.11",
+        "split": "^1.0.1",
+        "stream-combiner": "^0.2.2",
+        "through": "^2.3.8"
+      }
+    },
+    "node_modules/file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==",
+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/from": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/from/-/from-0.1.7.tgz",
+      "integrity": "sha512-twe20eF1OxVxp/ML/kq2p1uc6KvFK/+vs8WjEbeKmV2He22MKm7YF2ANIt+EOqhJ5L3K/SuuPhk0hWQDjOM23g==",
+      "license": "MIT"
+    },
+    "node_modules/hexy": {
+      "version": "0.2.11",
+      "resolved": "https://registry.npmjs.org/hexy/-/hexy-0.2.11.tgz",
+      "integrity": "sha512-ciq6hFsSG/Bpt2DmrZJtv+56zpPdnq+NQ4ijEFrveKN0ZG1mhl/LdT1NQZ9se6ty1fACcI4d4vYqC9v8EYpH2A==",
+      "license": "MIT",
+      "bin": {
+        "hexy": "bin/hexy_cmd.js"
+      }
+    },
+    "node_modules/long": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
+      "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/map-stream": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/map-stream/-/map-stream-0.0.7.tgz",
+      "integrity": "sha512-C0X0KQmGm3N2ftbTGBhSyuydQ+vV1LC3f3zPvT3RXHXNZrvfPZcoXp/N5DOa8vedX/rTMm2CjTtivFg2STJMRQ==",
+      "license": "MIT"
+    },
+    "node_modules/minimist": {
+      "version": "0.0.10",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
+      "integrity": "sha512-iotkTvxc+TwOm5Ieim8VnSNvCDjCK9S8G3scJ50ZthspSxa7jx50jkhYduuAtAjvfDUwSgOwf8+If99AlOEhyw==",
+      "license": "MIT"
+    },
+    "node_modules/nan": {
+      "version": "2.22.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.22.0.tgz",
+      "integrity": "sha512-nbajikzWTMwsW+eSsNm3QwlOs7het9gGJU5dDZzRTQGk03vyBOauxgI4VakDzE0PtsGTmXPsXTbbjVhRwR5mpw==",
+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/optimist": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
+      "integrity": "sha512-snN4O4TkigujZphWLN0E//nQmm7790RYaE53DdL7ZYwee2D8DDo9/EyYiKUfN3rneWUjhJnueija3G9I2i0h3g==",
+      "license": "MIT/X11",
+      "dependencies": {
+        "minimist": "~0.0.1",
+        "wordwrap": "~0.0.2"
+      }
+    },
+    "node_modules/pause-stream": {
+      "version": "0.0.11",
+      "resolved": "https://registry.npmjs.org/pause-stream/-/pause-stream-0.0.11.tgz",
+      "integrity": "sha512-e3FBlXLmN/D1S+zHzanP4E/4Z60oFAa3O051qt1pxa7DEJWKAyil6upYVXCWadEnuoqa4Pkc9oUx9zsxYeRv8A==",
+      "license": [
+        "MIT",
+        "Apache2"
+      ],
+      "dependencies": {
+        "through": "~2.3"
+      }
+    },
+    "node_modules/put": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/put/-/put-0.0.6.tgz",
+      "integrity": "sha512-w0szIZ2NkqznMFqxYPRETCIi+q/S8UKis9F4yOl6/N9NDCZmbjZZT85aI4FgJf3vIPrzMPX60+odCLOaYxNWWw==",
+      "license": "MIT/X11",
+      "engines": {
+        "node": ">=0.3.0"
+      }
+    },
+    "node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/sax": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.4.1.tgz",
+      "integrity": "sha512-+aWOz7yVScEGoKNd4PA10LZ8sk0A/z5+nXQG5giUO5rprX9jgYsTdov9qCchZiPIZezbZH+jRut8nPodFAX4Jg==",
+      "license": "ISC"
+    },
+    "node_modules/split": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/split/-/split-1.0.1.tgz",
+      "integrity": "sha512-mTyOoPbrivtXnwnIxZRFYRrPNtEFKlpB2fvjSnCQUiAA6qAZzqwna5envK4uk6OIeP17CsdF3rSBGYVBsU0Tkg==",
+      "license": "MIT",
+      "dependencies": {
+        "through": "2"
+      },
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/stream-combiner": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/stream-combiner/-/stream-combiner-0.2.2.tgz",
+      "integrity": "sha512-6yHMqgLYDzQDcAkL+tjJDC5nSNuNIx0vZtRZeiPh7Saef7VHX9H5Ijn9l2VIol2zaNYlYEX6KyuT/237A58qEQ==",
+      "license": "MIT",
+      "dependencies": {
+        "duplexer": "~0.1.1",
+        "through": "~2.3.4"
+      }
+    },
+    "node_modules/through": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha512-w89qg7PI8wAdvX60bMDP+bFoD5Dvhm9oLheFp5O4a2QF0cSBGsBX4qZmadPMvVqlLJBBci+WqGGOAPvcDeNSVg==",
+      "license": "MIT"
+    },
+    "node_modules/wordwrap": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
+      "integrity": "sha512-1tMA907+V4QmxV7dbRvb4/8MaRALK6q9Abid3ndMYnbyo8piisCmeONVqVSXqQA3KaP4SLt5b7ud6E2sqP8TFw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/xml2js": {
+      "version": "0.4.23",
+      "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.23.tgz",
+      "integrity": "sha512-ySPiMjM0+pLDftHgXY4By0uswI3SPKLDw/i3UXbnO8M/p28zqexCUoPmQFrYD+/1BzhGJSs2i1ERWKJAtiLrug==",
+      "license": "MIT",
+      "dependencies": {
+        "sax": ">=0.6.0",
+        "xmlbuilder": "~11.0.0"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/xmlbuilder": {
+      "version": "11.0.1",
+      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-11.0.1.tgz",
+      "integrity": "sha512-fDlsI/kFEx7gLvbecc0/ohLG50fugQp8ryHzMTuW9vSa1GJ0XYWKnhsUx7oie3G98+r56aTQIUB4kht42R3JvA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=4.0"
+      }
+    }
+  }
+}
diff --git a/users/Profpatsch/alacritty-change-color-scheme/package.json b/users/Profpatsch/alacritty-change-color-scheme/package.json
new file mode 100644
index 000000000000..720ee4b15657
--- /dev/null
+++ b/users/Profpatsch/alacritty-change-color-scheme/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "alacritty-change-color-scheme",
+  "version": "1.0.0",
+  "main": "alacritty-change-color-scheme.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "bin": "alacritty-change-color-scheme.js",
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "dbus-native": "^0.4.0"
+  }
+}
diff --git a/users/Profpatsch/alacritty.nix b/users/Profpatsch/alacritty.nix
index d3461c4aadfb..05300580e34c 100644
--- a/users/Profpatsch/alacritty.nix
+++ b/users/Profpatsch/alacritty.nix
@@ -3,25 +3,53 @@
 let
   bins = depot.nix.getBins pkgs.alacritty [ "alacritty" ];
 
+  # https://github.com/alacritty/alacritty-theme
+  themes = {
+    # dark = "alacritty_0_12";
+    dark = "google";
+    light = "dayfox";
+  };
+
   config =
     {
-      alacritty-config = { font.size = 18; scrolling.history = 100000; };
+      config = {
+        # sets the theme for this config (autogenerated file)
+        general.import = [ "~/.config/alacritty/alacritty-colors-autogen.toml" ];
+        font.size = 18;
+        scrolling.history = 100000;
+      };
       #  This disables the dpi-sensitive scaling (cause otherwise the font will be humongous on my laptop screen)
       alacritty-env.WINIT_X11_SCALE_FACTOR = 1;
     };
 
-
-  config-file = (pkgs.formats.toml { }).generate "alacritty.conf" config.alacritty-config;
-
   alacritty = depot.nix.writeExecline "alacritty" { } (
     (lib.concatLists (lib.mapAttrsToList (k: v: [ "export" k (toString v) ]) config.alacritty-env))
     ++ [
+      "backtick"
+      "-E"
+      "config"
+      [ depot.users.Profpatsch.xdg-config-home ]
+
       bins.alacritty
       "--config-file"
-      config-file
+      ((pkgs.formats.toml { }).generate "alacritty.conf" config.config)
       "$@"
     ]
   );
 
+  alacritty-themes = pkgs.fetchFromGitHub {
+    owner = "alacritty";
+    repo = "alacritty-theme";
+    rev = "95a7d695605863ede5b7430eb80d9e80f5f504bc";
+    sha256 = "sha256-D37MQtNS20ESny5UhW1u6ELo9czP4l+q0S8neH7Wdbc=";
+  };
+
+
 in
-alacritty
+{
+  inherit
+    alacritty
+    alacritty-themes
+    themes;
+
+}
diff --git a/users/Profpatsch/napalm.nix b/users/Profpatsch/napalm.nix
new file mode 100644
index 000000000000..44c5885bd05e
--- /dev/null
+++ b/users/Profpatsch/napalm.nix
@@ -0,0 +1,9 @@
+{ pkgs, ... }:
+import
+  (builtins.fetchGit {
+    url = "https://github.com/nix-community/napalm";
+    rev = "e1babff744cd278b56abe8478008b4a9e23036cf";
+  })
+{
+  inherit pkgs;
+}
diff --git a/users/Profpatsch/nix-home/default.nix b/users/Profpatsch/nix-home/default.nix
index 6d5de19aedcd..8c8d82eb7147 100644
--- a/users/Profpatsch/nix-home/default.nix
+++ b/users/Profpatsch/nix-home/default.nix
@@ -186,7 +186,7 @@ let
           ([
             {
               name = "bin/terminal-emulator";
-              path = depot.users.Profpatsch.alacritty;
+              path = depot.users.Profpatsch.alacritty.alacritty;
             }
           ]);
 
diff --git a/users/Profpatsch/xdg-config-home.nix b/users/Profpatsch/xdg-config-home.nix
new file mode 100644
index 000000000000..cc09eb634fb2
--- /dev/null
+++ b/users/Profpatsch/xdg-config-home.nix
@@ -0,0 +1,14 @@
+{ depot, pkgs, lib, ... }:
+depot.nix.writeExecline "xdg-config-home" { } [
+  "if"
+  "-n"
+  [
+    "printenv"
+    "XDG_CONFIG_HOME"
+  ]
+  "importas"
+  "HOME"
+  "HOME"
+  "echo"
+  "\${HOME}/.config"
+]