ngz pushed a commit to branch master
in repository guix.
commit 2f21931833274fb4760cb82203495fab5991877f
Author: Guix Together <[email protected]>
AuthorDate: Thu Dec 16 01:46:50 2021 -0500
doc: Mention how to remedy "source file ... newer than compiled error".
* doc/contributing.texi (Running Guix Before It Is Installed): Mention
how to remedy "source file ... newer than compiled" error by running
`make -j`.
Co-authored-by: jgart <[email protected]>
Co-authored-by: Julien Lepiller <[email protected]>
Co-authored-by: Ryan Prior <[email protected]>
Co-authored-by: Blake Shaw <[email protected]>
Signed-off-by: Nicolas Goaziou <[email protected]>
---
doc/contributing.texi | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/doc/contributing.texi b/doc/contributing.texi
index f258d79bd2..196ac48879 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -243,6 +243,24 @@ local source tree; it simply updates the
@file{~/.config/guix/current}
symlink (@pxref{Invoking guix pull}). Run @command{git pull} instead if
you want to upgrade your local source tree.
+Sometimes, especially if you have recently updated your repository,
+running @command{./pre-inst-env} will print a message similar to the
+following example:
+
+@example
+;;; note: source file /home/user/projects/guix/guix/progress.scm
+;;; newer than compiled /home/user/projects/guix/guix/progress.go
+@end example
+
+This is only a note and you can safely ignore it. You can get rid of
+the message by running @command{make -j4}. Until you do, Guile will run
+slightly slower because it will interpret the code instead of using
+prepared Guile object (@file{.go}) files.
+
+You can run @command{make} automatically as you work using
+@command{watchexec} from the @code{watchexec} package. For example,
+to build again each time you update a package file, you can run
+@samp{watchexec -w gnu/packages make -j4}.
@node The Perfect Setup
@section The Perfect Setup
