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Diffstat (limited to 'pkgs/stdenv/generic/setup.sh')
| -rw-r--r-- | pkgs/stdenv/generic/setup.sh | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh index 26d28609d87..c5feffcea99 100644 --- a/pkgs/stdenv/generic/setup.sh +++ b/pkgs/stdenv/generic/setup.sh @@ -660,6 +660,10 @@ substituteStream() { echo "substituteStream(): ERROR: substitution variables must be valid Bash names, \"$varName\" isn't." >&2 return 1 fi + if [ -z ${!varName+x} ]; then + echo "substituteStream(): ERROR: variable \$$varName is unset" >&2 + return 1 + fi pattern="@$varName@" replacement="${!varName}" ;; |