mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-18 10:56:53 +00:00
63 lines
2.4 KiB
Bash
63 lines
2.4 KiB
Bash
# This setup hook causes the fixup phase to rewrite all script
|
|
# interpreter file names (`#! /path') to paths found in $PATH. E.g.,
|
|
# /bin/sh will be rewritten to /nix/store/<hash>-some-bash/bin/sh.
|
|
# /usr/bin/env gets special treatment so that ".../bin/env python" is
|
|
# rewritten to /nix/store/<hash>/bin/python. Interpreters that are
|
|
# already in the store are left untouched.
|
|
|
|
fixupOutputHooks+=('if [ -z "$dontPatchShebangs" ]; then patchShebangs "$prefix"; fi')
|
|
|
|
patchShebangs() {
|
|
local dir="$1"
|
|
header "patching script interpreter paths in $dir"
|
|
local f
|
|
local oldPath
|
|
local newPath
|
|
local arg0
|
|
local args
|
|
local oldInterpreterLine
|
|
local newInterpreterLine
|
|
|
|
find "$dir" -type f -perm +0100 | while read f; do
|
|
if [ "$(head -1 "$f" | head -c +2)" != '#!' ]; then
|
|
# missing shebang => not a script
|
|
continue
|
|
fi
|
|
|
|
oldInterpreterLine=$(head -1 "$f" | tail -c +3)
|
|
read -r oldPath arg0 args <<< "$oldInterpreterLine"
|
|
|
|
if $(echo "$oldPath" | grep -q "/bin/env$"); then
|
|
# Check for unsupported 'env' functionality:
|
|
# - options: something starting with a '-'
|
|
# - environment variables: foo=bar
|
|
if $(echo "$arg0" | grep -q -- "^-.*\|.*=.*"); then
|
|
echo "unsupported interpreter directive \"$oldInterpreterLine\" (set dontPatchShebangs=1 and handle shebang patching yourself)"
|
|
exit 1
|
|
fi
|
|
newPath="$(command -v "$arg0" || true)"
|
|
else
|
|
if [ "$oldPath" = "" ]; then
|
|
# If no interpreter is specified linux will use /bin/sh. Set
|
|
# oldpath="/bin/sh" so that we get /nix/store/.../sh.
|
|
oldPath="/bin/sh"
|
|
fi
|
|
newPath="$(command -v "$(basename "$oldPath")" || true)"
|
|
args="$arg0 $args"
|
|
fi
|
|
|
|
newInterpreterLine="$newPath $args"
|
|
|
|
if [ -n "$oldPath" -a "${oldPath:0:${#NIX_STORE}}" != "$NIX_STORE" ]; then
|
|
if [ -n "$newPath" -a "$newPath" != "$oldPath" ]; then
|
|
echo "$f: interpreter directive changed from \"$oldInterpreterLine\" to \"$newInterpreterLine\""
|
|
# escape the escape chars so that sed doesn't interpret them
|
|
escapedInterpreterLine=$(echo "$newInterpreterLine" | sed 's|\\|\\\\|g')
|
|
sed -i -e "1 s|.*|#\!$escapedInterpreterLine|" "$f"
|
|
fi
|
|
fi
|
|
done
|
|
|
|
stopNest
|
|
}
|