Remove usages of nix show-derivation in build-desktop.sh for purity

nix/desktop/default.nix

@@ -34,6 +34,10 @@ in
       unset QT_PATH
     '' else ''
       export QT_PATH="${qt5.full}"
+      export QT_BASEBIN_PATH="${qt5.qtbase.bin}"
       export PATH="${stdenv.lib.makeBinPath [ qt5.full ]}:$PATH"
-    '');
+    '') +
+    lib.optionalString targetLinux linuxPlatform.shellHook +
+    lib.optionalString targetDarwin darwinPlatform.shellHook +
+    lib.optionalString targetWindows windowsPlatform.shellHook;
   }

nix/desktop/linux/default.nix

@@ -11,4 +11,8 @@ let
 in
 {
   buildInputs = [ appimagekit linuxdeployqt patchelf baseImage ];
+
+  shellHook = ''
+    export STATUSREACT_LINUX_BASEIMAGE_PATH="${baseImage}/src"
+  '';
 }

nix/desktop/macos/default.nix

@@ -9,4 +9,8 @@ let
 in
 {
   buildInputs = [ baseImage ];
+
+  shellHook = ''
+    export STATUSREACT_MACOS_BASEIMAGE_PATH="${baseImage}/src"
+  '';
 }

nix/desktop/windows/default.nix

@@ -14,4 +14,8 @@ in
     baseImage
     go # Needed for Windows build only
   ];
+
+  shellHook = ''
+    export STATUSREACT_WINDOWS_BASEIMAGE_PATH="${baseImage}/src"
+  '';
 }

scripts/build-desktop.sh

@@ -209,14 +209,12 @@ function bundleWindows() {
   fi
 
   # TODO this needs to be fixed: status-react/issues/5378
-  local windowsBaseImagePath="$(nix show-derivation -r -f $STATUSREACTPATH | jq -r '.[] | select(.env.name=="StatusIm-Windows-base-image") | .outputs.out.path')/src/"
-
   local top_srcdir=$(joinExistingPath "$STATUSREACTPATH" '.')
   VERSION_MAJOR="$(cut -d'.' -f1 <<<"$VERSION")"
   VERSION_MINOR="$(cut -d'.' -f2 <<<"$VERSION")"
   VERSION_BUILD="$(cut -d'.' -f3 <<<"$VERSION")"
   makensis -Dtop_srcdir=${top_srcdir} \
-           -Dbase_image_dir=${windowsBaseImagePath} \
+           -Dbase_image_dir=${STATUSREACT_WINDOWS_BASEIMAGE_PATH} \
            -DCOMPRESSION_ALGO=${compressionAlgo} \
            -DCOMPRESSION_TYPE=${compressionType} \
            -DVERSION_MAJOR=$VERSION_MAJOR \
@@ -239,8 +237,7 @@ function bundleLinux() {
     rm -rf StatusImAppImage AppDir
 
     # TODO this needs to be fixed: status-react/issues/5378
-    local baseAppImagePath="$(nix show-derivation -r -f $STATUSREACTPATH | jq -r '.[] | select(.env.name=="StatusImAppImage") | .outputs.out.path')/src"
-    cp -r $baseAppImagePath/StatusImAppImage .
+    cp -r ${STATUSREACT_LINUX_BASEIMAGE_PATH}/StatusImAppImage .
     chmod -R +w StatusImAppImage/
 
     mkdir AppDir
@@ -305,19 +302,6 @@ function bundleLinux() {
 }
 
 if is_macos; then
-  function getQtFullOutPathFromNixStore() {
-    local qtFullDerivationPath=$(nix show-derivation -f $STATUSREACTPATH/default.nix | jq -r '.[] | .inputDrvs | 'keys' | .[]' | grep qt-full)
-
-    echo $(nix show-derivation $qtFullDerivationPath | jq -r '.[] | .outputs.out.path')
-  }
-
-  function getQtBaseBinPathFromNixStore() {
-    local qtFullDerivationPath=$(nix show-derivation -f $STATUSREACTPATH/default.nix | jq -r '.[] | .inputDrvs | 'keys' | .[]' | grep qt-full)
-    local qtBaseDerivationPath=$(nix show-derivation $qtFullDerivationPath | jq -r '.[] | .inputDrvs | 'keys' | .[]' | grep qtbase)
-
-    echo $(nix show-derivation $qtBaseDerivationPath | jq -r '.[] | .outputs.bin.path')
-  }
-
   function copyDylibNixDependenciesToPackage() {
     local dylib="$1"
     local contentsDir="$2"
@@ -444,8 +428,7 @@ function bundleMacOS() {
     # download prepared package with mac bundle files (it contains qt libraries, icon)
     rm -rf Status.app
     # TODO this needs to be fixed: status-react/issues/5378
-    local baseAppImagePath="$(nix show-derivation -r -f $STATUSREACTPATH | jq -r '.[] | select(.env.name=="StatusImAppBundle") | .outputs.out.path')/src"
-    cp -r $baseAppImagePath/Status.app .
+    cp -r ${STATUSREACT_MACOS_BASEIMAGE_PATH}/Status.app .
     chmod -R +w Status.app/
 
     local contentsPath='Status.app/Contents'
@@ -468,11 +451,9 @@ function bundleMacOS() {
     if program_exists nix && [ -n "$IN_NIX_SHELL" ]; then
       # Since in the Nix qt.full package the different Qt modules are spread across several directories,
       # macdeployqt cannot find some qtbase plugins, so we copy them in its place
-      local qtbaseBinPath=$(getQtBaseBinPathFromNixStore)
-      local qtfullOutPath=$(getQtFullOutPathFromNixStore)
       mkdir -p "$contentsPath/PlugIns"
-      for plugin in ${qtbaseplugins[@]}; do copyQtPlugInToPackage "$qtbaseBinPath" "$plugin" "$contentsPath"; done
-      for plugin in ${qtfullplugins[@]}; do copyQtPlugInToPackage "$qtfullOutPath" "$plugin" "$contentsPath"; done
+      for plugin in ${qtbaseplugins[@]}; do copyQtPlugInToPackage "$QT_BASEBIN_PATH" "$plugin" "$contentsPath"; done
+      for plugin in ${qtfullplugins[@]}; do copyQtPlugInToPackage "$QT_PATH" "$plugin" "$contentsPath"; done
     fi
 
     macdeployqt Status.app \