forked from lix-project/lix
![Eelco Dolstra](/assets/img/avatar_default.png)
SRI hashes (https://www.w3.org/TR/SRI/) combine the hash algorithm and a base-64 hash. This allows more concise and standard hash specifications. For example, instead of import <nix/fetchurl.nl> { url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz; sha256 = "5d22dad058d5c800d65a115f919da22938c50dd6ba98c5e3a183172d149840a4"; }; you can write import <nix/fetchurl.nl> { url = https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3.tar.xz; hash = "sha256-XSLa0FjVyADWWhFfkZ2iKTjFDda6mMXjoYMXLRSYQKQ="; }; In fixed-output derivations, the outputHashAlgo is no longer mandatory if outputHash specifies the hash (either as an SRI or in the old "<type>:<hash>" format). 'nix hash-{file,path}' now print hashes in SRI format by default. I also reverted them to use SHA-256 by default because that's what we're using most of the time in Nixpkgs. Suggested by @zimbatm.
75 lines
2.1 KiB
Bash
75 lines
2.1 KiB
Bash
source common.sh
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clearStore
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# Test fetching a flat file.
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hash=$(nix-hash --flat --type sha256 ./fetchurl.sh)
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh --argstr sha256 $hash --no-out-link --hashed-mirrors '')
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cmp $outPath fetchurl.sh
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# Now using a base-64 hash.
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clearStore
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hash=$(nix hash-file --type sha512 --base64 ./fetchurl.sh)
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh --argstr sha512 $hash --no-out-link --hashed-mirrors '')
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cmp $outPath fetchurl.sh
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# Now using an SRI hash.
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clearStore
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hash=$(nix hash-file ./fetchurl.sh)
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[[ $hash =~ ^sha512- ]]
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh --argstr hash $hash --no-out-link --hashed-mirrors '')
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cmp $outPath fetchurl.sh
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# Test the hashed mirror feature.
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clearStore
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hash=$(nix hash-file --type sha512 --base64 ./fetchurl.sh)
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hash32=$(nix hash-file --type sha512 --base16 ./fetchurl.sh)
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mirror=$TMPDIR/hashed-mirror
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rm -rf $mirror
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mkdir -p $mirror/sha512
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ln -s $(pwd)/fetchurl.sh $mirror/sha512/$hash32
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file:///no-such-dir/fetchurl.sh --argstr sha512 $hash --no-out-link --hashed-mirrors "file://$mirror")
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# Test unpacking a NAR.
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rm -rf $TEST_ROOT/archive
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mkdir -p $TEST_ROOT/archive
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cp ./fetchurl.sh $TEST_ROOT/archive
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chmod +x $TEST_ROOT/archive/fetchurl.sh
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ln -s foo $TEST_ROOT/archive/symlink
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nar=$TEST_ROOT/archive.nar
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nix-store --dump $TEST_ROOT/archive > $nar
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hash=$(nix-hash --flat --type sha256 $nar)
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$nar --argstr sha256 $hash \
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--arg unpack true --argstr name xyzzy --no-out-link)
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echo $outPath | grep -q 'xyzzy'
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test -x $outPath/fetchurl.sh
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test -L $outPath/symlink
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nix-store --delete $outPath
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# Test unpacking a compressed NAR.
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narxz=$TEST_ROOT/archive.nar.xz
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rm -f $narxz
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xz --keep $nar
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outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$narxz --argstr sha256 $hash \
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--arg unpack true --argstr name xyzzy --no-out-link)
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test -x $outPath/fetchurl.sh
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test -L $outPath/symlink
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