forked from mirrors/nixpkgs
35 lines
1,020 B
Nix
35 lines
1,020 B
Nix
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# The program `remove-references-to' created by this derivation replaces all
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# references to the given Nix store paths in the specified files by a
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# non-existent path (/nix/store/eeee...). This is useful for getting rid of
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# dependencies that you know are not actually needed at runtime.
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{ stdenv, writeScriptBin }:
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writeScriptBin "remove-references-to" ''
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#! ${stdenv.shell} -e
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# References to remove
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targets=()
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while getopts t: o; do
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case "$o" in
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t) storeId=$(echo "$OPTARG" | sed -n "s|^$NIX_STORE/\\([a-z0-9]\{32\}\\)-.*|\1|p")
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if [ -z "$storeId" ]; then
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echo "-t argument must be a Nix store path"
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exit 1
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fi
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targets+=("$storeId")
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esac
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done
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shift $(($OPTIND-1))
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# Files to remove the references from
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regions=()
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for i in "$@"; do
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test ! -L "$i" -a -f "$i" && regions+=("$i")
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done
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for target in "''${targets[@]}" ; do
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sed -i -e "s|$NIX_STORE/$target-|$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-|g" "''${regions[@]}"
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done
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''
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