diff --git a/pkgs/development/tools/build-managers/bmake/setup-hook.sh b/pkgs/development/tools/build-managers/bmake/setup-hook.sh
index f477a96d57ab..a36d024b111e 100644
--- a/pkgs/development/tools/build-managers/bmake/setup-hook.sh
+++ b/pkgs/development/tools/build-managers/bmake/setup-hook.sh
@@ -1,3 +1,5 @@
+# shellcheck shell=bash disable=SC2086,SC2154,SC2206
+
 addMakeFlags() {
     export prefix="$out"
     export MANDIR="${!outputMan}/share/man"
@@ -6,48 +8,40 @@ addMakeFlags() {
     export STRIP_FLAG=
 }
 
-preConfigureHooks+=(addMakeFlags)
-
 bmakeBuildPhase() {
     runHook preBuild
 
     local flagsArray=(
         ${enableParallelBuilding:+-j${NIX_BUILD_CORES}}
-        SHELL=$SHELL
+        SHELL="$SHELL"
         $makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
         $buildFlags ${buildFlagsArray+"${buildFlagsArray[@]}"}
     )
 
     echoCmd 'build flags' "${flagsArray[@]}"
     bmake ${makefile:+-f $makefile} "${flagsArray[@]}"
-    unset flagsArray
 
     runHook postBuild
 }
 
-if [ -z "${dontUseBmakeBuild-}" -a -z "${buildPhase-}" ]; then
-    buildPhase=bmakeBuildPhase
-fi
-
 bmakeCheckPhase() {
     runHook preCheck
 
     if [ -z "${checkTarget:-}" ]; then
         #TODO(@oxij): should flagsArray influence make -n?
         if bmake -n ${makefile:+-f $makefile} check >/dev/null 2>&1; then
-            checkTarget=check
+            checkTarget="check"
         elif bmake -n ${makefile:+-f $makefile} test >/dev/null 2>&1; then
-            checkTarget=test
+            checkTarget="test"
         fi
     fi
 
     if [ -z "${checkTarget:-}" ]; then
         echo "no test target found in bmake, doing nothing"
     else
-        # shellcheck disable=SC2086
         local flagsArray=(
             ${enableParallelChecking:+-j${NIX_BUILD_CORES}}
-            SHELL=$SHELL
+            SHELL="$SHELL"
             # Old bash empty array hack
             $makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
             ${checkFlags:-VERBOSE=y} ${checkFlagsArray+"${checkFlagsArray[@]}"}
@@ -56,17 +50,11 @@ bmakeCheckPhase() {
 
         echoCmd 'check flags' "${flagsArray[@]}"
         bmake ${makefile:+-f $makefile} "${flagsArray[@]}"
-
-        unset flagsArray
     fi
 
     runHook postCheck
 }
 
-if [ -z "${dontUseBmakeCheck-}" -a -z "${checkPhase-}" ]; then
-    checkPhase=bmakeCheckPhase
-fi
-
 bmakeInstallPhase() {
     runHook preInstall
 
@@ -74,10 +62,9 @@ bmakeInstallPhase() {
         mkdir -p "$prefix"
     fi
 
-    # shellcheck disable=SC2086
     local flagsArray=(
         ${enableParallelInstalling:+-j${NIX_BUILD_CORES}}
-        SHELL=$SHELL
+        SHELL="$SHELL"
         # Old bash empty array hack
         $makeFlags ${makeFlagsArray+"${makeFlagsArray[@]}"}
         $installFlags ${installFlagsArray+"${installFlagsArray[@]}"}
@@ -86,15 +73,10 @@ bmakeInstallPhase() {
 
     echoCmd 'install flags' "${flagsArray[@]}"
     bmake ${makefile:+-f $makefile} "${flagsArray[@]}"
-    unset flagsArray
 
     runHook postInstall
 }
 
-if [ -z "${dontUseBmakeInstall-}" -a -z "${installPhase-}" ]; then
-    installPhase=bmakeInstallPhase
-fi
-
 bmakeDistPhase() {
     runHook preDist
 
@@ -103,7 +85,6 @@ bmakeDistPhase() {
     fi
 
     # Old bash empty array hack
-    # shellcheck disable=SC2086
     local flagsArray=(
         $distFlags ${distFlagsArray+"${distFlagsArray[@]}"} ${distTarget:-dist}
     )
@@ -116,13 +97,26 @@ bmakeDistPhase() {
 
         # Note: don't quote $tarballs, since we explicitly permit
         # wildcards in there.
-        # shellcheck disable=SC2086
         cp -pvd ${tarballs:-*.tar.gz} "$out/tarballs"
     fi
 
     runHook postDist
 }
 
-if [ -z "${dontUseBmakeDist-}" -a -z "${distPhase-}" ]; then
+preConfigureHooks+=(addMakeFlags)
+
+if [ -z "${dontUseBmakeBuild-}" ] && [ -z "${buildPhase-}" ]; then
+    buildPhase=bmakeBuildPhase
+fi
+
+if [ -z "${dontUseBmakeCheck-}" ] && [ -z "${checkPhase-}" ]; then
+    checkPhase=bmakeCheckPhase
+fi
+
+if [ -z "${dontUseBmakeInstall-}" ] && [ -z "${installPhase-}" ]; then
+    installPhase=bmakeInstallPhase
+fi
+
+if [ -z "${dontUseBmakeDist-}" ] && [ -z "${distPhase-}" ]; then
     distPhase=bmakeDistPhase
 fi