diff options
Diffstat (limited to 'pkgs/build-support/wrapper-common')
| -rw-r--r-- | pkgs/build-support/wrapper-common/utils.bash | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/pkgs/build-support/wrapper-common/utils.bash b/pkgs/build-support/wrapper-common/utils.bash index d164982b43453..66b7c3f3e83c5 100644 --- a/pkgs/build-support/wrapper-common/utils.bash +++ b/pkgs/build-support/wrapper-common/utils.bash @@ -49,6 +49,35 @@ mangleVarBool() { done } +# Combine a singular value from all roles. If multiple roles are being served, +# and the value differs in these roles then the request is impossible to +# satisfy and we abort immediately. +mangleVarSingle() { + local var="$1" + shift + local -a role_suffixes=("$@") + + local outputVar="${var}_@suffixSalt@" + for suffix in "${role_suffixes[@]}"; do + local inputVar="${var}${suffix}" + if [ -v "$inputVar" ]; then + if [ -v "$outputVar" ]; then + if [ "${!outputVar}" != "${!inputVar}" ]; then + { + echo "Multiple conflicting values defined for $outputVar" + echo "Existing value is ${!outputVar}" + echo "Attempting to set to ${!inputVar} via $inputVar" + } >&2 + + exit 1 + fi + else + declare -gx ${outputVar}="${!inputVar}" + fi + fi + done +} + skip () { if (( "${NIX_DEBUG:-0}" >= 1 )); then echo "skipping impure path $1" >&2 |