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1# symlinks are often created in postFixup
2# don't use fixupOutputHooks, it is before postFixup
3postFixupHooks+=(_makeSymlinksRelativeInAllOutputs)
4
5# For every symlink in $output that refers to another file in $output
6# ensure that the symlink is relative. This removes references to the output
7# has from the resulting store paths and thus the NAR files.
8_makeSymlinksRelative() {
9 local symlinkTarget
10
11 if [ "${dontRewriteSymlinks-}" ] || [ ! -e "$prefix" ]; then
12 return
13 fi
14
15 while IFS= read -r -d $'\0' f; do
16 symlinkTarget=$(readlink "$f")
17 if [[ "$symlinkTarget"/ != "$prefix"/* ]]; then
18 # skip this symlink as it doesn't point to $prefix
19 continue
20 fi
21
22 if [ ! -e "$symlinkTarget" ]; then
23 echo "the symlink $f is broken, it points to $symlinkTarget (which is missing)"
24 fi
25
26 echo "rewriting symlink $f to be relative to $prefix"
27 ln -snrf "$symlinkTarget" "$f"
28
29 done < <(find $prefix -type l -print0)
30}
31
32_makeSymlinksRelativeInAllOutputs() {
33 local output
34 for output in $(getAllOutputNames); do
35 prefix="${!output}" _makeSymlinksRelative
36 done
37}