$HOME not found in Windows

[mikelalcon]

From : https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/copybara-discuss/XPTFivEHJUg/B_mlkpc5CgAJ

Hi Mikel,

Thanks for replying. Yes, I am using windows. Here is the stack trace:

Task: Cleaning output directory. java.lang.NullPointerException: $HOME environment var is not set at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787) at com.google.copybara.GeneralOptions.getDirFactory(GeneralOptions.java:208) at com.google.copybara.Main.lambda$cleanupOutputDir$0(Main.java:351) at com.google.copybara.GeneralOptions.ioRepoTask(GeneralOptions.java:189) at com.google.copybara.Main.cleanupOutputDir(Main.java:345) at com.google.copybara.Main.initEnvironment(Main.java:337) at com.google.copybara.Main.runInternal(Main.java:160) at com.google.copybara.Main.run(Main.java:107) at com.google.copybara.Main.main(Main.java:86)

[natalieReppekus]

Hi Mikel,

What happend to this issue. Is there a solution now?

[mikelalcon]

Hi Natalie,

We didn't investigate as it was tricky to have a windows environment. But if you use the --output-root flag it shouldn't hit that codepath (But there might be a failure later in the process, as we don't test in Windows). Our general recommendation is to run it in Linux or OSX, but let us know how it goes.

[natalieReppekus]

Hi, I switched to Linux and it works for me now :)

[hcoona]

I think windows won't automatically set $HOME environment variable. We need to use $HOMEDRIVE + $HOMEPATH instead.

[Vertexwahn]

Would be nice if the tool would also work on Windows - got the same error with current master

It seems to use USERPROFILE in the case HOME is not set fixes the issue on Windows:

    if (getOutputRoot() != null) {
      return new DirFactory(getOutputRoot());
    } else {
      String home = checkNotNull(environment.get("HOME"), "$HOME environment var is not set");
      String home = environment.get("HOME");
      if (home == null) {
        home = environment.get("USERPROFILE");
      }
      return new DirFactory(fileSystem.getPath(home).resolve("copybara"));
    }
  }

[hsudhof]

See the comment about --output-root