pkgs/build-support/setup-hooks/make-symlinks-relative.sh

   1 # symlinks are often created in postFixup
   2 # don't use fixupOutputHooks, it is before postFixup
   3 postFixupHooks+=(_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 }