0b1edac8c0
fetchbzr always uses the derivation name `bzr-export`. nix-prefetch-bzr should use the same name for its output. This avoids duplicate downloads and problems with forbidden characters in bazaar repository names.
74 lines
1.8 KiB
Bash
Executable file
74 lines
1.8 KiB
Bash
Executable file
#! /bin/sh -e
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url=$1
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rev=$2
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expHash=$3
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hashType=$NIX_HASH_ALGO
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if test -z "$hashType"; then
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hashType=sha256
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fi
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if test -z "$hashFormat"; then
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hashFormat=--base32
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fi
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if test -z "$url"; then
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echo "syntax: nix-prefetch-bzr URL [REVISION [EXPECTED-HASH]]" >&2
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exit 1
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fi
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revarg="-r $rev"
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test -n "$rev" || revarg=""
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repoName=$(echo $url | sed '
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s,.*/\([^/]\+\)/trunk/*$,\1,;t
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s,.*/\([^/]\+\)/branches/\([^/]\+\)/*$,\1-\2,;t
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s,.*/\([^/]\+\)/tags/\([^/]\+\)/*$,\1-\2,;t
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s,.*/\([^/]\+\)/*$,\1,;t
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')
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dstFile="bzr-export"
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# If the hash was given, a file with that hash may already be in the
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# store.
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if test -n "$expHash"; then
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finalPath=$(nix-store --print-fixed-path --recursive "$hashType" "$expHash" $dstFile)
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if ! nix-store --check-validity "$finalPath" 2> /dev/null; then
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finalPath=
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fi
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hash=$expHash
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fi
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# If we don't know the hash or a path with that hash doesn't exist,
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# download the file and add it to the store.
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if test -z "$finalPath"; then
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tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/bzr-checkout-tmp-XXXXXXXX")"
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trap "rm -rf \"$tmpPath\"" EXIT
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tmpFile="$tmpPath/$dstFile"
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# Perform the checkout.
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bzr -Ossl.cert_reqs=none export $revarg --format=dir "$tmpFile" "$url"
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echo "bzr revision is $(bzr revno $revarg "$url")"
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# Compute the hash.
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hash=$(nix-hash --type $hashType $hashFormat $tmpFile)
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if ! test -n "$QUIET"; then echo "hash is $hash" >&2; fi
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# Add the downloaded file to the Nix store.
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finalPath=$(nix-store --add-fixed --recursive "$hashType" $tmpFile)
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if test -n "$expHash" -a "$expHash" != "$hash"; then
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echo "hash mismatch for URL \`$url'"
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exit 1
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fi
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fi
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if ! test -n "$QUIET"; then echo "path is $finalPath" >&2; fi
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echo $hash
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if test -n "$PRINT_PATH"; then
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echo $finalPath
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fi
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