lix/tests/binary-cache.sh

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source common.sh
needLocalStore "'--no-require-sigs' cant be used with the daemon"
# We can produce drvs directly into the binary cache
clearStore
clearCacheCache
nix-instantiate --store "file://$cacheDir" dependencies.nix
# Create the binary cache.
clearStore
clearCache
outPath=$(nix-build dependencies.nix --no-out-link)
nix copy --to file://$cacheDir $outPath
# Test copying build logs to the binary cache.
expect 1 nix log --store file://$cacheDir $outPath 2>&1 | grep 'is not available'
nix store copy-log --to file://$cacheDir $outPath
nix log --store file://$cacheDir $outPath | grep FOO
rm -rf $TEST_ROOT/var/log/nix
expect 1 nix log $outPath 2>&1 | grep 'is not available'
nix log --substituters file://$cacheDir $outPath | grep FOO
# Test copying build logs from the binary cache.
Get rid of `.drv` special-casing for store path installables The release notes document the change in behavior, I don't include it here so there is no risk to it getting out of sync. > Motivation >> Plumbing CLI should be simple Store derivation installations are intended as "plumbing": very simple utilities for advanced users and scripts, and not what regular users interact with. (Similarly, regular Git users will use branch and tag names not explicit hashes for most things.) The plumbing CLI should prize simplicity over convenience; that is its raison d'etre. If the user provides a path, we should treat it the same way not caring what sort of path it is. >> Scripting This is especially important for the scripting use-case. when arbitrary paths are sent to e.g. `nix copy` and the script author wants consistent behavior regardless of what those store paths are. Otherwise the script author needs to be careful to filter out `.drv` ones, and then run `nix copy` again with those paths and `--derivation`. That is not good! >> Surprisingly low impact Only two lines in the tests need changing, showing that the impact of this is pretty light. Many command, like `nix log` will continue to work with just the derivation passed as before. This because we used to: - Special case the drv path and replace it with it's outputs (what this gets rid of). - Turn those output path *back* into the original drv path. Now we just skip that entire round trip! > Context Issue #7261 lays out a broader vision for getting rid of `--derivation`, and has this as one of its dependencies. But we can do this with or without that. `Installable::toDerivations` is changed to handle the case of a `DerivedPath::Opaque` ending in `.drv`, which is new: it simply doesn't need to do any extra work in that case. On this basis, commands like `nix {show-derivation,log} /nix/store/...-foo.drv` still work as before, as described above. When testing older daemons, the post-build-hook will be run against the old CLI, so we need the old version of the post-build-hook to support that use-case. Co-authored-by: Travis A. Everett <travis.a.everett@gmail.com> Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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nix store copy-log --from file://$cacheDir $(nix-store -qd $outPath)^'*'
nix log $outPath | grep FOO
basicDownloadTests() {
# No uploading tests bcause upload with force HTTP doesn't work.
# By default, a binary cache doesn't support "nix-env -qas", but does
# support installation.
clearStore
clearCacheCache
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nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "---"
nix-store --substituters "file://$cacheDir" --no-require-sigs -r $outPath
[ -x $outPath/program ]
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# But with the right configuration, "nix-env -qas" should also work.
clearStore
clearCacheCache
echo "WantMassQuery: 1" >> $cacheDir/nix-cache-info
nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "--S"
nix-env --substituters "file://$cacheDir" -f dependencies.nix -qas \* | grep -- "--S"
x=$(nix-env -f dependencies.nix -qas \* --prebuilt-only)
[ -z "$x" ]
nix-store --substituters "file://$cacheDir" --no-require-sigs -r $outPath
nix-store --check-validity $outPath
nix-store -qR $outPath | grep input-2
echo "WantMassQuery: 0" >> $cacheDir/nix-cache-info
}
# Test LocalBinaryCacheStore.
basicDownloadTests
# Test HttpBinaryCacheStore.
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export _NIX_FORCE_HTTP=1
basicDownloadTests
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# Test whether Nix notices if the NAR doesn't match the hash in the NAR info.
clearStore
nar=$(ls $cacheDir/nar/*.nar.xz | head -n1)
mv $nar $nar.good
mkdir -p $TEST_ROOT/empty
nix-store --dump $TEST_ROOT/empty | xz > $nar
expect 1 nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "hash mismatch" $TEST_ROOT/log
mv $nar.good $nar
Support cryptographically signed binary caches NAR info files in binary caches can now have a cryptographic signature that Nix will verify before using the corresponding NAR file. To create a private/public key pair for signing and verifying a binary cache, do: $ openssl genrsa -out ./cache-key.sec 2048 $ openssl rsa -in ./cache-key.sec -pubout > ./cache-key.pub You should also come up with a symbolic name for the key, such as "cache.example.org-1". This will be used by clients to look up the public key. (It's a good idea to number keys, in case you ever need to revoke/replace one.) To create a binary cache signed with the private key: $ nix-push --dest /path/to/binary-cache --key ./cache-key.sec --key-name cache.example.org-1 The public key (cache-key.pub) should be distributed to the clients. They should have a nix.conf should contain something like: signed-binary-caches = * binary-cache-public-key-cache.example.org-1 = /path/to/cache-key.pub If all works well, then if Nix fetches something from the signed binary cache, you will see a message like: *** Downloading ‘http://cache.example.org/nar/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’ (signed by ‘cache.example.org-1’) to ‘/nix/store/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’... On the other hand, if the signature is wrong, you get a message like NAR info file `http://cache.example.org/7dppcj5sc1nda7l54rjc0g5l1hamj09j.narinfo' has an invalid signature; ignoring Signatures are implemented as a single line appended to the NAR info file, which looks like this: Signature: 1;cache.example.org-1;HQ9Xzyanq9iV...muQ== Thus the signature has 3 fields: a version (currently "1"), the ID of key, and the base64-encoded signature of the SHA-256 hash of the contents of the NAR info file up to but not including the Signature line. Issue #75.
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# Test whether this unsigned cache is rejected if the user requires signed caches.
clearStore
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clearCacheCache
Support cryptographically signed binary caches NAR info files in binary caches can now have a cryptographic signature that Nix will verify before using the corresponding NAR file. To create a private/public key pair for signing and verifying a binary cache, do: $ openssl genrsa -out ./cache-key.sec 2048 $ openssl rsa -in ./cache-key.sec -pubout > ./cache-key.pub You should also come up with a symbolic name for the key, such as "cache.example.org-1". This will be used by clients to look up the public key. (It's a good idea to number keys, in case you ever need to revoke/replace one.) To create a binary cache signed with the private key: $ nix-push --dest /path/to/binary-cache --key ./cache-key.sec --key-name cache.example.org-1 The public key (cache-key.pub) should be distributed to the clients. They should have a nix.conf should contain something like: signed-binary-caches = * binary-cache-public-key-cache.example.org-1 = /path/to/cache-key.pub If all works well, then if Nix fetches something from the signed binary cache, you will see a message like: *** Downloading ‘http://cache.example.org/nar/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’ (signed by ‘cache.example.org-1’) to ‘/nix/store/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’... On the other hand, if the signature is wrong, you get a message like NAR info file `http://cache.example.org/7dppcj5sc1nda7l54rjc0g5l1hamj09j.narinfo' has an invalid signature; ignoring Signatures are implemented as a single line appended to the NAR info file, which looks like this: Signature: 1;cache.example.org-1;HQ9Xzyanq9iV...muQ== Thus the signature has 3 fields: a version (currently "1"), the ID of key, and the base64-encoded signature of the SHA-256 hash of the contents of the NAR info file up to but not including the Signature line. Issue #75.
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if nix-store --substituters "file://$cacheDir" -r $outPath; then
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echo "unsigned binary cache incorrectly accepted"
exit 1
fi
Support cryptographically signed binary caches NAR info files in binary caches can now have a cryptographic signature that Nix will verify before using the corresponding NAR file. To create a private/public key pair for signing and verifying a binary cache, do: $ openssl genrsa -out ./cache-key.sec 2048 $ openssl rsa -in ./cache-key.sec -pubout > ./cache-key.pub You should also come up with a symbolic name for the key, such as "cache.example.org-1". This will be used by clients to look up the public key. (It's a good idea to number keys, in case you ever need to revoke/replace one.) To create a binary cache signed with the private key: $ nix-push --dest /path/to/binary-cache --key ./cache-key.sec --key-name cache.example.org-1 The public key (cache-key.pub) should be distributed to the clients. They should have a nix.conf should contain something like: signed-binary-caches = * binary-cache-public-key-cache.example.org-1 = /path/to/cache-key.pub If all works well, then if Nix fetches something from the signed binary cache, you will see a message like: *** Downloading ‘http://cache.example.org/nar/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’ (signed by ‘cache.example.org-1’) to ‘/nix/store/7dppcj5sc1nda7l54rjc0g5l1hamj09j-subversion-1.7.11’... On the other hand, if the signature is wrong, you get a message like NAR info file `http://cache.example.org/7dppcj5sc1nda7l54rjc0g5l1hamj09j.narinfo' has an invalid signature; ignoring Signatures are implemented as a single line appended to the NAR info file, which looks like this: Signature: 1;cache.example.org-1;HQ9Xzyanq9iV...muQ== Thus the signature has 3 fields: a version (currently "1"), the ID of key, and the base64-encoded signature of the SHA-256 hash of the contents of the NAR info file up to but not including the Signature line. Issue #75.
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# Test whether fallback works if a NAR has disappeared. This does not require --fallback.
clearStore
mv $cacheDir/nar $cacheDir/nar2
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result
mv $cacheDir/nar2 $cacheDir/nar
# Test whether fallback works if a NAR is corrupted. This does require --fallback.
clearStore
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mv $cacheDir/nar $cacheDir/nar2
mkdir $cacheDir/nar
for i in $(cd $cacheDir/nar2 && echo *); do touch $cacheDir/nar/$i; done
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(! nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result)
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nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result --fallback
rm -rf $cacheDir/nar
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mv $cacheDir/nar2 $cacheDir/nar
# Test whether building works if the binary cache contains an
# incomplete closure.
clearStore
rm -v $(grep -l "StorePath:.*dependencies-input-2" $cacheDir/*.narinfo)
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "copying path.*input-0" $TEST_ROOT/log
grepQuiet "copying path.*input-2" $TEST_ROOT/log
grepQuiet "copying path.*top" $TEST_ROOT/log
# Idem, but without cached .narinfo.
clearStore
clearCacheCache
nix-build --substituters "file://$cacheDir" --no-require-sigs dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grepQuiet "don't know how to build" $TEST_ROOT/log
grepQuiet "building.*input-1" $TEST_ROOT/log
grepQuiet "building.*input-2" $TEST_ROOT/log
grepQuiet "copying path.*input-0" $TEST_ROOT/log
grepQuiet "copying path.*top" $TEST_ROOT/log
# Create a signed binary cache.
clearCache
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clearCacheCache
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk1
publicKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk1)
nix key generate-secret --key-name test.nixos.org-1 > $TEST_ROOT/sk2
badKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk2)
nix key generate-secret --key-name foo.nixos.org-1 > $TEST_ROOT/sk3
otherKey=$(nix key convert-secret-to-public < $TEST_ROOT/sk3)
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_NIX_FORCE_HTTP= nix copy --to file://$cacheDir?secret-key=$TEST_ROOT/sk1 $outPath
# Downloading should fail if we don't provide a key.
clearStore
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clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir")
# And it should fail if we provide an incorrect key.
clearStore
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clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir" --trusted-public-keys "$badKey")
# It should succeed if we provide the correct key.
nix-store -r $outPath --substituters "file://$cacheDir" --trusted-public-keys "$otherKey $publicKey"
# It should fail if we corrupt the .narinfo.
clearStore
cacheDir2=$TEST_ROOT/binary-cache-2
rm -rf $cacheDir2
cp -r $cacheDir $cacheDir2
for i in $cacheDir2/*.narinfo; do
grep -v References $i > $i.tmp
mv $i.tmp $i
done
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clearCacheCache
(! nix-store -r $outPath --substituters "file://$cacheDir2" --trusted-public-keys "$publicKey")
# If we provide a bad and a good binary cache, it should succeed.
nix-store -r $outPath --substituters "file://$cacheDir2 file://$cacheDir" --trusted-public-keys "$publicKey"
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unset _NIX_FORCE_HTTP
# Test 'nix verify --all' on a binary cache.
nix store verify -vvvvv --all --store file://$cacheDir --no-trust
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# Test local NAR caching.
narCache=$TEST_ROOT/nar-cache
rm -rf $narCache
mkdir $narCache
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[[ $(nix store cat --store "file://$cacheDir?local-nar-cache=$narCache" $outPath/foobar) = FOOBAR ]]
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rm -rfv "$cacheDir/nar"
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[[ $(nix store cat --store "file://$cacheDir?local-nar-cache=$narCache" $outPath/foobar) = FOOBAR ]]
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(! nix store cat --store file://$cacheDir $outPath/foobar)
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# Test NAR listing generation.
clearCache
outPath=$(nix-build --no-out-link -E '
with import ./config.nix;
mkDerivation {
name = "nar-listing";
buildCommand = "mkdir $out; echo foo > $out/bar; ln -s xyzzy $out/link";
}
')
nix copy --to file://$cacheDir?write-nar-listing=1 $outPath
diff -u \
<(jq -S < $cacheDir/$(basename $outPath | cut -c1-32).ls) \
<(echo '{"version":1,"root":{"type":"directory","entries":{"bar":{"type":"regular","size":4,"narOffset":232},"link":{"type":"symlink","target":"xyzzy"}}}}' | jq -S)
# Test debug info index generation.
clearCache
outPath=$(nix-build --no-out-link -E '
with import ./config.nix;
mkDerivation {
name = "debug-info";
buildCommand = "mkdir -p $out/lib/debug/.build-id/02; echo foo > $out/lib/debug/.build-id/02/623eda209c26a59b1a8638ff7752f6b945c26b.debug";
}
')
nix copy --to "file://$cacheDir?index-debug-info=1&compression=none" $outPath
diff -u \
<(cat $cacheDir/debuginfo/02623eda209c26a59b1a8638ff7752f6b945c26b.debug | jq -S) \
<(echo '{"archive":"../nar/100vxs724qr46phz8m24iswmg9p3785hsyagz0kchf6q6gf06sw6.nar","member":"lib/debug/.build-id/02/623eda209c26a59b1a8638ff7752f6b945c26b.debug"}' | jq -S)
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# Test against issue https://github.com/NixOS/nix/issues/3964
#
expr='
with import ./config.nix;
mkDerivation {
name = "multi-output";
buildCommand = "mkdir -p $out; echo foo > $doc; echo $doc > $out/docref";
outputs = ["out" "doc"];
}
'
outPath=$(nix-build --no-out-link -E "$expr")
docPath=$(nix-store -q --references $outPath)
# $ nix-store -q --tree $outPath
# ...-multi-output
# +---...-multi-output-doc
nix copy --to "file://$cacheDir" $outPath
hashpart() {
basename "$1" | cut -c1-32
}
# break the closure of out by removing doc
rm $cacheDir/$(hashpart $docPath).narinfo
nix-store --delete $outPath $docPath
# -vvv is the level that logs during the loop
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timeout 60 nix-build --no-out-link -E "$expr" --option substituters "file://$cacheDir" \
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--option trusted-binary-caches "file://$cacheDir" --no-require-sigs