buildDotnetModule: properly inherit arguments from drv

Previously buildDotnetModule did not properly inherit some arguments from
derivations, take for example this expression:

dotnetFlags = [
    "--runtime linux-x64"
];

It would error out as follows: "MSBUILD : error MSB1001: Unknown switch.".
Setting the same flag from bash would work fine. This fixes that, all
arguments should now be properly interpreted :)

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-build-hook.sh

@@ -1,4 +1,5 @@
-declare -a projectFile testProjectFile dotnetBuildFlags dotnetFlags
+# inherit arguments from derivation
+dotnetBuildFlags=( ${dotnetBuildFlags[@]-} )
 
 dotnetBuildHook() {
     echo "Executing dotnetBuildHook"

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-check-hook.sh

@@ -1,4 +1,5 @@
-declare -a testProjectFile dotnetTestFlags dotnetFlags
+# inherit arguments from derivation
+dotnetTestFlags=( ${dotnetTestFlags[@]-} )
 
 dotnetCheckHook() {
     echo "Executing dotnetCheckHook"

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-configure-hook.sh

@@ -1,4 +1,8 @@
-declare -a projectFile testProjectFile dotnetRestoreFlags dotnetFlags
+declare -a projectFile testProjectFile
+
+# inherit arguments from derivation
+dotnetFlags=( ${dotnetFlags[@]-} )
+dotnetRestoreFlags=( ${dotnetRestoreFlags[@]-} )
 
 dotnetConfigureHook() {
     echo "Executing dotnetConfigureHook"

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-fixup-hook.sh

@@ -1,4 +1,5 @@
-declare -a makeWrapperArgs gappsWrapperArgs
+# Inherit arguments from the derivation
+makeWrapperArgs=( ${makeWrapperArgs-} )
 
 # First argument is the executable you want to wrap,
 # the second is the destination for the wrapper.
@@ -15,9 +16,9 @@ wrapDotnetProgram() {
 dotnetFixupHook() {
     echo "Executing dotnetFixupPhase"
 
-    if [ "${executables-}" ]; then
+    if [ "${executables}" ]; then
         for executable in ${executables[@]}; do
-            execPath="$out/lib/${pname-}/$executable"
+            execPath="$out/lib/${pname}/$executable"
 
             if [[ -f "$execPath" && -x "$execPath" ]]; then
                 wrapDotnetProgram "$execPath" "$out/bin/$(basename "$executable")"
@@ -27,7 +28,7 @@ dotnetFixupHook() {
             fi
         done
     else
-        for executable in $out/lib/${pname-}/*; do
+        for executable in $out/lib/${pname}/*; do
             if [[ -f "$executable" && -x "$executable" && "$executable" != *"dll"* ]]; then
                 wrapDotnetProgram "$executable" "$out/bin/$(basename "$executable")"
             fi

pkgs/build-support/dotnet/build-dotnet-module/hooks/dotnet-install-hook.sh

@@ -1,4 +1,5 @@
-declare -a projectFile dotnetInstallFlags dotnetFlags
+# inherit arguments from derivation
+dotnetInstallFlags=( ${dotnetInstallFlags[@]-} )
 
 dotnetInstallHook() {
     echo "Executing dotnetInstallHook"