110 lines
2.7 KiB
Nix
110 lines
2.7 KiB
Nix
# This function downloads and unpacks an archive file, such as a zip
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# or tar file. This is primarily useful for dynamically generated
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# archives, such as GitHub's /archive URLs, where the unpacked content
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# of the zip file doesn't change, but the zip file itself may
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# (e.g. due to minor changes in the compression algorithm, or changes
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# in timestamps).
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{
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lib,
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fetchurl,
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withUnzip ? true,
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unzip,
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glibcLocalesUtf8,
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}:
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{
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name ? "source",
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url ? "",
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urls ? [ ],
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nativeBuildInputs ? [ ],
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postFetch ? "",
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extraPostFetch ? "",
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# Optionally move the contents of the unpacked tree up one level.
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stripRoot ? true,
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# Allows to set the extension for the intermediate downloaded
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# file. This can be used as a hint for the unpackCmdHooks to select
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# an appropriate unpacking tool.
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extension ? null,
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# the rest are given to fetchurl as is
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...
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}@args:
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assert
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(extraPostFetch != "")
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-> lib.warn "use 'postFetch' instead of 'extraPostFetch' with 'fetchzip' and 'fetchFromGitHub' or 'fetchFromGitLab'." true;
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let
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tmpFilename =
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if extension != null then
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"download.${extension}"
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else
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baseNameOf (if url != "" then url else builtins.head urls);
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in
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fetchurl (
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{
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inherit name;
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recursiveHash = true;
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downloadToTemp = true;
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# Have to pull in glibcLocalesUtf8 for unzip in setup-hook.sh to handle
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# UTF-8 aware locale:
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# https://github.com/NixOS/nixpkgs/issues/176225#issuecomment-1146617263
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nativeBuildInputs =
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lib.optionals withUnzip [
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unzip
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glibcLocalesUtf8
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]
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++ nativeBuildInputs;
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postFetch =
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''
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unpackDir="$TMPDIR/unpack"
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mkdir "$unpackDir"
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cd "$unpackDir"
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renamed="$TMPDIR/${tmpFilename}"
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mv "$downloadedFile" "$renamed"
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unpackFile "$renamed"
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chmod -R +w "$unpackDir"
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''
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+ (
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if stripRoot then
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''
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if [ $(ls -A "$unpackDir" | wc -l) != 1 ]; then
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echo "error: zip file must contain a single file or directory."
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echo "hint: Pass stripRoot=false; to fetchzip to assume flat list of files."
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exit 1
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fi
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fn=$(cd "$unpackDir" && ls -A)
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if [ -f "$unpackDir/$fn" ]; then
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mkdir $out
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fi
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mv "$unpackDir/$fn" "$out"
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''
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else
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''
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mv "$unpackDir" "$out"
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''
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)
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+ ''
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${postFetch}
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${extraPostFetch}
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chmod 755 "$out"
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'';
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# ^ Remove non-owner write permissions
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# Fixes https://github.com/NixOS/nixpkgs/issues/38649
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}
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// removeAttrs args [
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"stripRoot"
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"extraPostFetch"
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"postFetch"
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"extension"
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"nativeBuildInputs"
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]
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)
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