39 lines
1.7 KiB
Bash
Executable file
39 lines
1.7 KiB
Bash
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p nix common-updater-scripts jq
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# Build both the cacert package and an overriden version where we use the source attribute of NSS.
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# Cacert and NSS are both from the same upstream sources. They are decoupled as
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# the cacert output only cares about a few infrequently changing files in the
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# sources while the NSS source code changes frequently.
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#
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# By having cacert on a older source revision that produces the same
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# certificate output as a newer version we can avoid large amounts of
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# unnecessary rebuilds.
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#
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# As of this writing there are a few magnitudes more packages depending on
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# cacert than on nss.
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#
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# We use `nss_latest` instead of `nss_esr`, because that is the newer version
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# and we want up-to-date certificates.
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# `nss_esr` is used for the ecosystem at large through the `nss` attribute,
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# because it is updated less frequently and maintained for longer, whereas `nss_latest`
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# is used for software that actually needs a new nss, e.g. Firefox.
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set -ex
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BASEDIR="$(dirname "$0")/../../../.."
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CURRENT_PATH=$(nix-build --no-out-link -A cacert.out)
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PATCHED_PATH=$(nix-build --no-out-link -E "with import $BASEDIR {}; (cacert.override { nssOverride = nss_latest; }).out")
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# Check the hash of the etc subfolder
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# We can't check the entire output as that contains the nix-support folder
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# which contains the output path itself.
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CURRENT_HASH=$(nix-hash "$CURRENT_PATH/etc")
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PATCHED_HASH=$(nix-hash "$PATCHED_PATH/etc")
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if [[ "$CURRENT_HASH" != "$PATCHED_HASH" ]]; then
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NSS_VERSION=$(nix-instantiate --json --eval -E "with import $BASEDIR {}; nss_latest.version" | jq -r .)
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update-source-version --version-key=srcVersion cacert.src "$NSS_VERSION"
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fi
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