1--- a/libbuild2/buildfile
2+++ b/libbuild2/buildfile
3@@ -86,8 +86,11 @@ build2_config_lines = [strings]
4 host_config_lines = [strings]
5
6 for l: $regex.replace_lines( \
7+ $regex.replace_lines( \
8 $config.save(), \
9 '^( *(#|(config\.(test[. ]|dist\.|install\.chroot|config\.hermetic))).*|)$', \
10+ [null], return_lines), \
11+ '^.*'$getenv(NIX_STORE)'/[a-z0-9]{32}-.*$', \
12 [null])
13 {
14 build2_config_lines += $l