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-rw-r--r--doc/contributing.texi14
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/contributing.texi b/doc/contributing.texi
index 880086506f..178659c26f 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -411,6 +411,20 @@ computationally intensive or rather cheap, depending on whether
substitutes are available for their dependencies (@pxref{Substitutes}).
Some of them require a lot of storage space to hold VM images.
+If you encounter an error like:
+
+@example
+Compiling Scheme modules...
+ice-9/eval.scm:142:16: In procedure compile-top-call:
+error: all-system-tests: unbound variable
+hint: Did you forget `(use-modules (gnu tests))'?
+@end example
+
+@noindent
+there may be inconsistencies in the work tree from previous builds. To
+resolve this, try running @command{make clean-go} followed by
+@command{make}.
+
Again in case of test failures, please send @email{bug-guix@@gnu.org}
all the details.