diff options
Diffstat (limited to 'pkgs/development/interpreters/lua-5/hooks/setup-hook.sh')
| -rw-r--r-- | pkgs/development/interpreters/lua-5/hooks/setup-hook.sh | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkgs/development/interpreters/lua-5/hooks/setup-hook.sh b/pkgs/development/interpreters/lua-5/hooks/setup-hook.sh index 1c445b82afde..7b2d2a4d83d8 100644 --- a/pkgs/development/interpreters/lua-5/hooks/setup-hook.sh +++ b/pkgs/development/interpreters/lua-5/hooks/setup-hook.sh @@ -22,6 +22,11 @@ addToLuaSearchPathWithCustomDelimiter() { # export only if we haven't already got this dir in the search path if [[ ${!varName-} == *"$absPattern"* ]]; then return; fi + # if the path variable has not yet been set, initialize it to ";;" + # this is a magic value that will be replaced by the default, + # allowing relative modules to be used even when there are system modules. + if [[ ! -v "${varName}" ]]; then export "${varName}=;;"; fi + export "${varName}=${!varName:+${!varName};}${absPattern}" } |