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-rw-r--r--pkgs/build-support/bintools-wrapper/setup-hook.sh8
1 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/build-support/bintools-wrapper/setup-hook.sh b/pkgs/build-support/bintools-wrapper/setup-hook.sh
index f65b792485a09..2e15fa95c7941 100644
--- a/pkgs/build-support/bintools-wrapper/setup-hook.sh
+++ b/pkgs/build-support/bintools-wrapper/setup-hook.sh
@@ -24,7 +24,8 @@ bintoolsWrapper_addLDVars () {
         # Python and Haskell packages often only have directories like $out/lib/ghc-8.4.3/ or
         # $out/lib/python3.6/, so having them in LDFLAGS just makes the linker search unnecessary
         # directories and bloats the size of the environment variable space.
-        if [[ -n "$(echo $1/lib/lib*)" ]]; then
+        local -a glob=( $1/lib/lib* )
+        if [ "${#glob[*]}" -gt 0 ]; then
             export NIX_${role_pre}LDFLAGS+=" -L$1/lib"
         fi
     fi
@@ -61,9 +62,8 @@ do
     if
         PATH=$_PATH type -p "@targetPrefix@${cmd}" > /dev/null
     then
-        upper_case="$(echo "$cmd" | tr "[:lower:]" "[:upper:]")"
-        export "${role_pre}${upper_case}=@targetPrefix@${cmd}";
-        export "${upper_case}${role_post}=@targetPrefix@${cmd}";
+        export "${role_pre}${cmd^^}=@targetPrefix@${cmd}";
+        export "${cmd^^}${role_post}=@targetPrefix@${cmd}";
     fi
 done