Allow changing output base path

README.md

@@ -173,6 +173,28 @@ Default `""`.
   ```
 </details>
 
+### `output-base`
+
+Change Bazel output base directory.
+
+You might want to change it when running on self-hosted runners with a custom directory layout.
+
+Default is one of the following:
+
+- `$HOME/.bazel` on Linux and macOS
+- `D:/_bazel` on Windows
+
+<details>
+  <summary>Examples</summary>
+
+  #### Use `C` drive letter
+
+  ```yaml
+  - uses: bazel-contrib/setup-bazel@0.9.1
+    with:
+      output-base: C:/_bazel
+  ```
+</details>
 
 ### `repository-cache`
 

action.yml

@@ -29,6 +29,10 @@ inputs:
     description: Google Cloud account key for remote cache
     required: false
     default: ""
+  output-base:
+    description: Bazel output base directory. Default is $HOME/.cache/bazel (POSIX) or D:/_bazel (Windows)
+    required: false
+    default: ""
   repository-cache:
     description: Cache repositories based on MODULE.bazel/WORKSPACE
     required: false

config.js

@@ -12,9 +12,17 @@ const homeDir = os.homedir()
 const arch = os.arch()
 const platform = os.platform()
 
+let bazelOutputBase = core.getInput('output-base')
+if (!bazelOutputBase) {
+  if (platform === 'win32') {
+    bazelOutputBase = 'D:/_bazel'
+  } else {
+    bazelOutputBase = `${homeDir}/.bazel`
+  }
+}
+
 let bazelDisk = core.toPosixPath(`${homeDir}/.cache/bazel-disk`)
 let bazelRepository = core.toPosixPath(`${homeDir}/.cache/bazel-repo`)
-let bazelOutputBase = `${homeDir}/.bazel`
 let bazelrcPaths = [core.toPosixPath(`${homeDir}/.bazelrc`)]
 let userCacheDir = `${homeDir}/.cache`
 
@@ -23,9 +31,8 @@ switch (platform) {
     userCacheDir = `${homeDir}/Library/Caches`
     break
   case 'win32':
-    bazelDisk = 'D:/_bazel-disk'
-    bazelRepository = 'D:/_bazel-repo'
-    bazelOutputBase = 'D:/_bazel'
+    bazelDisk = `${bazelOutputBase}-disk`
+    bazelRepository = `${bazelOutputBase}-repo`
     userCacheDir = `${homeDir}/AppData/Local`
     if (process.env.HOME) {
       bazelrcPaths.push(core.toPosixPath(`${process.env.HOME}/.bazelrc`))

dist/main/index.js

@@ -18,9 +18,17 @@ const homeDir = os.homedir()
 const arch = os.arch()
 const platform = os.platform()
 
+let bazelOutputBase = core.getInput('output-base')
+if (!bazelOutputBase) {
+  if (platform === 'win32') {
+    bazelOutputBase = 'D:/_bazel'
+  } else {
+    bazelOutputBase = `${homeDir}/.bazel`
+  }
+}
+
 let bazelDisk = core.toPosixPath(`${homeDir}/.cache/bazel-disk`)
 let bazelRepository = core.toPosixPath(`${homeDir}/.cache/bazel-repo`)
-let bazelOutputBase = `${homeDir}/.bazel`
 let bazelrcPaths = [core.toPosixPath(`${homeDir}/.bazelrc`)]
 let userCacheDir = `${homeDir}/.cache`
 
@@ -29,9 +37,8 @@ switch (platform) {
     userCacheDir = `${homeDir}/Library/Caches`
     break
   case 'win32':
-    bazelDisk = 'D:/_bazel-disk'
-    bazelRepository = 'D:/_bazel-repo'
-    bazelOutputBase = 'D:/_bazel'
+    bazelDisk = `${bazelOutputBase}-disk`
+    bazelRepository = `${bazelOutputBase}-repo`
     userCacheDir = `${homeDir}/AppData/Local`
     if (process.env.HOME) {
       bazelrcPaths.push(core.toPosixPath(`${process.env.HOME}/.bazelrc`))

dist/post/index.js

@@ -18,9 +18,17 @@ const homeDir = os.homedir()
 const arch = os.arch()
 const platform = os.platform()
 
+let bazelOutputBase = core.getInput('output-base')
+if (!bazelOutputBase) {
+  if (platform === 'win32') {
+    bazelOutputBase = 'D:/_bazel'
+  } else {
+    bazelOutputBase = `${homeDir}/.bazel`
+  }
+}
+
 let bazelDisk = core.toPosixPath(`${homeDir}/.cache/bazel-disk`)
 let bazelRepository = core.toPosixPath(`${homeDir}/.cache/bazel-repo`)
-let bazelOutputBase = `${homeDir}/.bazel`
 let bazelrcPaths = [core.toPosixPath(`${homeDir}/.bazelrc`)]
 let userCacheDir = `${homeDir}/.cache`
 
@@ -29,9 +37,8 @@ switch (platform) {
     userCacheDir = `${homeDir}/Library/Caches`
     break
   case 'win32':
-    bazelDisk = 'D:/_bazel-disk'
-    bazelRepository = 'D:/_bazel-repo'
-    bazelOutputBase = 'D:/_bazel'
+    bazelDisk = `${bazelOutputBase}-disk`
+    bazelRepository = `${bazelOutputBase}-repo`
     userCacheDir = `${homeDir}/AppData/Local`
     if (process.env.HOME) {
       bazelrcPaths.push(core.toPosixPath(`${process.env.HOME}/.bazelrc`))