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45 lines
1.1 KiB
Nix
45 lines
1.1 KiB
Nix
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{ stdenv
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, writeShellScript
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, coreutils
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, git
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, nix
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, common-updater-scripts
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}:
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# This is an updater for unstable packages that should always use the latest
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# commit.
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{ url ? null # The git url, if empty it will be set to src.url
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}:
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let
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updateScript = writeShellScript "unstable-update-script.sh" ''
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set -ex
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url="$1"
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# By default we set url to src.url
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if [[ -z "$url" ]]; then
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url="$(${nix}/bin/nix-instantiate $systemArg --eval -E \
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"with import ./. {}; $UPDATE_NIX_ATTR_PATH.src.url" \
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| tr -d '"')"
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fi
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# Get info about HEAD from a shallow git clone
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tmpdir="$(${coreutils}/bin/mktemp -d)"
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${git}/bin/git clone --bare --depth=1 "$url" "$tmpdir"
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pushd "$tmpdir"
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commit_date="$(${git}/bin/git show -s --pretty='format:%cs')"
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commit_sha="$(${git}/bin/git show -s --pretty='format:%H')"
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popd
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${coreutils}/bin/rm -rf "$tmpdir"
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# update the nix expression
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${common-updater-scripts}/bin/update-source-version \
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"$UPDATE_NIX_ATTR_PATH" \
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"unstable-$commit_date" \
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--rev="$commit_sha"
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'';
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in [ updateScript url ]
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