25 lines
880 B
Bash
25 lines
880 B
Bash
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set -euo pipefail
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# The file that defines the derivation that should be updated
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file=$1
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# The name of the output of this flake that should be updated
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flakeOutput=$2
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# A pattern in a line preceding the hash that should be updated
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patternPrecedingHash=$3
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sed -i "/$patternPrecedingHash/,/hash/ s|hash = .*|hash = \"\";|" $file
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# Display stderr and capture it. stdbuf is required to disable output buffering.
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stderr=$(
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nix build --no-link -L .#$flakeOutput |&
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stdbuf -oL grep -v '\berror:.*failed to build$' |
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tee /dev/stderr || :
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)
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hash=$(echo "$stderr" | sed -nE 's/.*?\bgot: *?(sha256-.*)/\1/p')
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if [[ ! $hash ]]; then
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echo
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echo "Error: No hash in build output."
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exit 1
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fi
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sed -i "/$patternPrecedingHash/,/hash/ s|hash = .*|hash = \"$hash\";|" $file
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echo "(Note: The above hash mismatch message is not an error. It is part of the fetching process.)"
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