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91 lines
2.5 KiB
Nix
91 lines
2.5 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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{ lib, fetchurl, unzip, glibcLocalesUtf8 }:
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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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, url ? ""
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, urls ? []
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, extraPostFetch ? ""
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, postFetch ? ""
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, name ? "source"
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, pname ? ""
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, version ? ""
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, nativeBuildInputs ? [ ]
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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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, ... } @ args:
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lib.warnIf (extraPostFetch != "") "use 'postFetch' instead of 'extraPostFetch' with 'fetchzip' and 'fetchFromGitHub'."
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(let
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tmpFilename =
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if extension != null
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then "download.${extension}"
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else baseNameOf (if url != "" then url else builtins.head urls);
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in
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fetchurl ((
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if (pname != "" && version != "") then
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{
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name = "${pname}-${version}";
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inherit pname version;
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}
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else
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{ inherit name; }
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) // {
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recursiveHash = true;
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downloadToTemp = true;
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# Have to pull in glibcLocalesUtf8 for unzip in setup-hook.sh to handle
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# UTF-8 aware locale:
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# https://github.com/NixOS/nixpkgs/issues/176225#issuecomment-1146617263
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nativeBuildInputs = [ unzip glibcLocalesUtf8 ] ++ nativeBuildInputs;
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postFetch =
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''
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unpackDir="$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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+ (if stripRoot then ''
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if [ $(ls "$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" && echo *)
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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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'' else ''
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mv "$unpackDir" "$out"
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'')
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+ ''
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${postFetch}
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'' + ''
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${extraPostFetch}
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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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chmod 755 "$out"
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'';
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} // removeAttrs args [ "stripRoot" "extraPostFetch" "postFetch" "extension" "nativeBuildInputs" ]))
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