1--- a/libbuild2/buildfile
2+++ b/libbuild2/buildfile
3@@ -83,9 +83,13 @@ config/cxx{host-config}: config/in{host-config}
4 # want it).
5 #
6 build2_config = $regex.replace_lines( \
7+ $regex.replace_lines( \
8 $config.save(), \
9 '^( *(#|(config\.(test[. ]|dist\.|install\.chroot|config\.hermetic))).*|)$', \
10 [null], \
11+ return_lines), \
12+ '^.*'$getenv(NIX_STORE)'/[a-z0-9]{32}-.*$', \
13+ [null], \
14 return_lines)
15
16 # Also preserve config.version.