Add support for caching uv

See https://github.com/astral-sh/uv

Author: akx

src/cache-distributions/cache-factory.ts

@@ -1,11 +1,13 @@
 import PipCache from './pip-cache';
 import PipenvCache from './pipenv-cache';
 import PoetryCache from './poetry-cache';
+import UvCache from './uv-cache';
 
 export enum PackageManagers {
   Pip = 'pip',
   Pipenv = 'pipenv',
-  Poetry = 'poetry'
+  Poetry = 'poetry',
+  Uv = 'uv'
 }
 
 export function getCacheDistributor(
@@ -20,6 +22,8 @@ export function getCacheDistributor(
       return new PipenvCache(pythonVersion, cacheDependencyPath);
     case PackageManagers.Poetry:
       return new PoetryCache(pythonVersion, cacheDependencyPath);
+    case PackageManagers.Uv:
+      return new UvCache(pythonVersion, cacheDependencyPath);
     default:
       throw new Error(`Caching for '${packageManager}' is not supported`);
   }

src/cache-distributions/uv-cache.ts

@@ -0,0 +1,36 @@
+import * as glob from '@actions/glob';
+import * as os from 'os';
+import * as path from 'path';
+
+import CacheDistributor from './cache-distributor';
+
+export default class UvCache extends CacheDistributor {
+  constructor(
+    private pythonVersion: string,
+    protected patterns: string = '**/requirements.txt'
+  ) {
+    super('uv', patterns);
+  }
+
+  protected async getCacheGlobalDirectories() {
+    if (process.platform === 'win32') {
+      // `LOCALAPPDATA` should always be defined,
+      // but we can't just join `undefined`
+      // into the path in case it's not.
+      return [
+        path.join(process.env['LOCALAPPDATA'] ?? os.homedir(), 'uv', 'cache')
+      ];
+    }
+    return [path.join(os.homedir(), '.cache/uv')];
+  }
+
+  protected async computeKeys() {
+    const hash = await glob.hashFiles(this.patterns);
+    const primaryKey = `${this.CACHE_KEY_PREFIX}-${process.env['RUNNER_OS']}-python-${this.pythonVersion}-${this.packageManager}-${hash}`;
+    const restoreKey = undefined;
+    return {
+      primaryKey,
+      restoreKey
+    };
+  }
+}