86 lines
3.1 KiB
Bash
86 lines
3.1 KiB
Bash
_handleCmdOutput(){
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local command=("$1" "$2")
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local versionOutput
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local envArgs=()
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if [[ "$3" != "*" ]]; then
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envArgs+=("--ignore-environment")
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for var in $3; do
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envArgs+=("$var=${!var}")
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done
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fi
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versionOutput="$(env \
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--chdir=/ \
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--argv0="$(basename "${command[0]}")" \
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"${envArgs[@]}" \
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"${command[@]}" 2>&1 \
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| sed -e 's|@storeDir@/[^/ ]*/|{{storeDir}}/|g' \
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|| true)"
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if [[ "$versionOutput" =~ "$version" ]]; then
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echoPrefix="Successfully managed to"
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else
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echoPrefix="Did not"
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fi
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# The return value of this function is this variable:
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echo "$echoPrefix"
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# And in anycase we want these to be printed in the build log, useful for
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# debugging, so we print these to stderr.
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echo "$echoPrefix" find version "$version" in the output of the command \
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"${command[@]}" >&2
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echo "$versionOutput" >&2
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}
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versionCheckHook(){
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runHook preVersionCheck
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echo Executing versionCheckPhase
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# Don't keep any environment variables by default
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: "${versionCheckKeepEnvironment:=}"
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local cmdProgram cmdArg echoPrefix
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if [[ ! -z "${versionCheckProgram-}" ]]; then
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cmdProgram="$versionCheckProgram"
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elif [[ ! -z "${NIX_MAIN_PROGRAM-}" ]]; then
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cmdProgram="${!outputBin}/bin/${NIX_MAIN_PROGRAM}"
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elif [[ ! -z "${pname-}" ]]; then
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echo "versionCheckHook: Package \`${pname}\` does not have the \`meta.mainProgram\` attribute." \
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"We'll assume that the main program has the same name for now, but this behavior is deprecated," \
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"because it leads to surprising errors when the assumption does not hold." \
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"If the package has a main program, please set \`meta.mainProgram\` in its definition to make this warning go away." \
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"Should the binary that outputs the intended version differ from \`meta.mainProgram\`, consider setting \`versionCheckProgram\` instead." >&2
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cmdProgram="${!outputBin}/bin/${pname}"
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else
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echo "versionCheckHook: \$NIX_MAIN_PROGRAM, \$versionCheckProgram and \$pname are all empty, so" \
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"we don't know how to run the versionCheckPhase." \
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"To fix this, set one of \`meta.mainProgram\` or \`versionCheckProgram\`." >&2
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exit 2
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fi
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if [[ ! -x "$cmdProgram" ]]; then
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echo "versionCheckHook: $cmdProgram was not found, or is not an executable" >&2
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exit 2
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fi
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if [[ -z "${versionCheckProgramArg}" ]]; then
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for cmdArg in "--help" "--version"; do
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echoPrefix="$(_handleCmdOutput "$cmdProgram" "$cmdArg" "$versionCheckKeepEnvironment")"
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if [[ "$echoPrefix" == "Successfully managed to" ]]; then
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break
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fi
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done
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else
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cmdArg="$versionCheckProgramArg"
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echoPrefix="$(_handleCmdOutput "$cmdProgram" "$cmdArg" "$versionCheckKeepEnvironment")"
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fi
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if [[ "$echoPrefix" == "Did not" ]]; then
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exit 2
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fi
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runHook postVersionCheck
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echo Finished versionCheckPhase
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}
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if [[ -z "${dontVersionCheck-}" ]]; then
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echo "Using versionCheckHook"
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preInstallCheckHooks+=(versionCheckHook)
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fi
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