push sheeet

pkgs/test/build-environment-info/default.nix

@@ -0,0 +1,39 @@
+{
+  lib,
+  stdenv,
+  runCommand,
+  getent,
+  xcbuild,
+}:
+
+# Prints information about the state of the build environment for
+# assistance debugging Hydra. Feel free to add anything you would find
+# useful to this.
+runCommand "build-environment-info"
+  {
+    nativeBuildInputs = [ getent ] ++ lib.optionals stdenv.buildPlatform.isDarwin [ xcbuild ];
+  }
+  ''
+    # It’s useful to get more info even if a command fails.
+    set +e
+
+    run() {
+      echoCmd : "$@"
+      "$@"
+    }
+
+    run uname -a
+
+    ${lib.optionalString stdenv.buildPlatform.isDarwin ''
+      run env SYSTEM_VERSION_COMPAT=0 plutil -p /System/Library/CoreServices/SystemVersion.plist
+    ''}
+
+    run id
+
+    run getent passwd "$(id -un)"
+
+    run ulimit -a
+
+    # Always fail so that this job can easily be restarted.
+    run exit 1
+  ''