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authorEelco Dolstra <edolstra@gmail.com>2018-12-13T13·30+0100
committerEelco Dolstra <edolstra@gmail.com>2018-12-13T13·30+0100
commit6024dc1d97212130c19d3ff5ce6b1d102837eee6 (patch)
tree71ad514b53863fc00ed4b8cff710dec1e792b056 /tests/fetchurl.sh
parentc37e6d77ea86df249aeaf65d329a6be3b837ad62 (diff)
Support SRI hashes
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.
Diffstat (limited to 'tests/fetchurl.sh')
-rw-r--r--tests/fetchurl.sh11
1 files changed, 11 insertions, 0 deletions
diff --git a/tests/fetchurl.sh b/tests/fetchurl.sh
index 9bbf044f7329..d51d081f5e3b 100644
--- a/tests/fetchurl.sh
+++ b/tests/fetchurl.sh
@@ -18,6 +18,17 @@ outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh
 
 cmp $outPath fetchurl.sh
 
+# Now using an SRI hash.
+clearStore
+
+hash=$(nix hash-file ./fetchurl.sh)
+
+[[ $hash =~ ^sha512- ]]
+
+outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh --argstr hash $hash --no-out-link --hashed-mirrors '')
+
+cmp $outPath fetchurl.sh
+
 # Test the hashed mirror feature.
 clearStore