[GOG]: add support for linux native dlcs in modify install dialog

src/backend/storeManagers/gog/games.ts

@@ -399,11 +399,12 @@ export async function install(
   }
 
   const sizeOnDisk = await getPathDiskSize(join(path, gameInfo.folder_name))
+  const install_path = join(path, gameInfo.folder_name)
 
   const installedData: InstalledInfo = {
     platform: installPlatform,
     executable: '',
-    install_path: join(path, gameInfo.folder_name),
+    install_path,
     install_size: getFileSize(sizeOnDisk),
     is_dlc: false,
     version: additionalInfo ? additionalInfo.version : installInfo.game.version,
@@ -434,6 +435,17 @@ export async function install(
         LogPrefix.Gog
       )
     }
+  } else if (isLinuxNative) {
+    const installer = join(install_path, 'support/postinst.sh')
+    if (existsSync(installer)) {
+      logInfo(`Running ${installer}`, LogPrefix.Gog)
+      await spawnAsync(installer, []).catch((err) =>
+        logError(
+          `Failed to run linux installer: ${installer} - ${err}`,
+          LogPrefix.Gog
+        )
+      )
+    }
   }
   addShortcuts(appName)
   return { status: 'done' }
@@ -1117,9 +1129,6 @@ export async function update(
     gameObject.version = installInfo.game.version
     gameObject.branch = updateOverwrites?.branch
     gameObject.language = overwrittenLanguage
-    if (updateOverwrites?.dlcs) {
-      gameObject.installedDLCs = updateOverwrites?.dlcs
-    }
     gameObject.versionEtag = etag
   } else {
     const installerInfo = await getLinuxInstallerInfo(appName)
@@ -1128,6 +1137,9 @@ export async function update(
     }
     gameObject.version = installerInfo.version
   }
+  if (updateOverwrites?.dlcs) {
+    gameObject.installedDLCs = updateOverwrites?.dlcs
+  }
   const sizeOnDisk = await getPathDiskSize(join(gameObject.install_path))
   gameObject.install_size = getFileSize(sizeOnDisk)
   installedGamesStore.set('installed', installedArray)
@@ -1140,6 +1152,17 @@ export async function update(
     (isWindows || existsSync(gameSettings.winePrefix))
   ) {
     await setup(appName, gameObject, false)
+  } else if (gameObject.platform === 'linux') {
+    const installer = join(gameObject.install_path, 'support/postinst.sh')
+    if (existsSync(installer)) {
+      logInfo(`Running ${installer}`, LogPrefix.Gog)
+      await spawnAsync(installer, []).catch((err) =>
+        logError(
+          `Failed to run linux installer: ${installer} - ${err}`,
+          LogPrefix.Gog
+        )
+      )
+    }
   }
   sendGameStatusUpdate({
     appName: appName,

src/frontend/screens/Game/GamePage/components/DotsMenu.tsx

@@ -27,7 +27,7 @@ const DotsMenu = ({ gameInfo, handleUpdate }: Props) => {
   const [showChangelog, setShowChangelog] = useState(false)
   const [showModifyInstallModal, setShowModifyInstallModal] = useState(false)
 
-  const { is_installed, title, install } = gameInfo
+  const { is_installed, title } = gameInfo
 
   const hasRequirements = (gameExtraInfo?.reqs || []).length > 0
 
@@ -50,7 +50,6 @@ const DotsMenu = ({ gameInfo, handleUpdate }: Props) => {
           }
           changelog={gameExtraInfo?.changelog}
           runner={gameInfo.runner}
-          installPlatform={install.platform}
           handleUpdate={handleUpdate}
           handleChangeLog={() => setShowChangelog(true)}
           disableUpdate={is.installing || is.updating}

src/frontend/screens/Game/GameSubMenu/index.tsx

@@ -20,7 +20,6 @@ interface Props {
   title: string
   storeUrl: string
   changelog?: string
-  installPlatform?: string
   runner: Runner
   handleUpdate: () => void
   handleChangeLog: () => void
@@ -37,7 +36,6 @@ export default function GamesSubmenu({
   storeUrl,
   changelog,
   runner,
-  installPlatform,
   handleUpdate,
   handleChangeLog,
   disableUpdate,
@@ -235,8 +233,7 @@ export default function GamesSubmenu({
     onShowModifyInstall &&
     ['legendary', 'gog'].includes(runner) &&
     isInstalled &&
-    !isThirdPartyManaged &&
-    installPlatform !== 'linux'
+    !isThirdPartyManaged
 
   return (
     <>

src/frontend/screens/Game/ModifyInstallModal/GOG/index.tsx

@@ -31,6 +31,7 @@ export default function GOGModifyInstallModal({
 }: GOGModifyInstallModal) {
   const { t, i18n } = useTranslation('gamepage')
   const { t: tr } = useTranslation()
+  const isLinux = gameInfo.install.platform === 'linux'
   const [gameInstallInfo, setGameInstallInfo] = useState<GogInstallInfo>()
 
   const [installLanguages, setInstallLanguages] = useState<string[]>([])
@@ -65,7 +66,7 @@ export default function GOGModifyInstallModal({
   const [currentTab, setCurrentTab] = useState('updates')
 
   const handleConfirm = () => {
-    const gameBuild = selectedBuild || builds[0].build_id
+    const gameBuild = selectedBuild || builds[0]?.build_id
     const versionPinned = !!selectedBuild
     const buildModified = gameBuild !== gameInfo.install.buildId
     const languageModified = installLanguage !== gameInfo.install.language
@@ -100,7 +101,9 @@ export default function GOGModifyInstallModal({
     }
 
     const gameModified =
-      buildModified || branchModified || languageModified || dlcModified
+      (!isLinux && (buildModified || branchModified)) ||
+      languageModified ||
+      dlcModified
 
     if (gameModified) {
       // Create update
@@ -247,35 +250,39 @@ export default function GOGModifyInstallModal({
         )}
       </Tabs>
       <TabPanel value={currentTab} index={'updates'}>
-        <div className="ModifyInstall__branch">
-          <BranchSelector
-            appName={gameInfo.app_name}
-            branches={branches}
-            branch={branch}
-            setBranch={setBranch}
-            savedBranchPassword={savedBranchPassword}
-            onPasswordChange={(newPasswd) => setSavedBranchPassword(newPasswd)}
-          />
-        </div>
-
-        {installLanguages.length > 1 && (
-          <div className="ModifyInstall__languages">
-            <GameLanguageSelector
-              installLanguages={installLanguages}
-              setInstallLanguage={setInstallLanguage}
-              installPlatform={gameInfo.install.platform ?? 'windows'}
-              installLanguage={installLanguage}
+        {!!branches.length && (
+          <div className="ModifyInstall__branch">
+            <BranchSelector
+              appName={gameInfo.app_name}
+              branches={branches}
+              branch={branch}
+              setBranch={setBranch}
+              savedBranchPassword={savedBranchPassword}
+              onPasswordChange={(newPasswd) =>
+                setSavedBranchPassword(newPasswd)
+              }
             />
           </div>
         )}
 
-        <div className="ModifyInstall__version">
-          <BuildSelector
-            gameBuilds={builds}
-            selectedBuild={selectedBuild}
-            setSelectedBuild={setSelectedBuild}
+        <div className="ModifyInstall__languages">
+          <GameLanguageSelector
+            installLanguages={installLanguages}
+            setInstallLanguage={setInstallLanguage}
+            installPlatform={gameInfo.install.platform ?? 'windows'}
+            installLanguage={installLanguage}
           />
         </div>
+
+        {!!builds.length && (
+          <div className="ModifyInstall__version">
+            <BuildSelector
+              gameBuilds={builds}
+              selectedBuild={selectedBuild}
+              setSelectedBuild={setSelectedBuild}
+            />
+          </div>
+        )}
       </TabPanel>
       <TabPanel value={currentTab} index={'dlc'}>
         <div className="ModifyInstall__gogDlcs">

src/frontend/screens/Library/components/InstallModal/DownloadDialog/GameLanguageSelector.tsx

@@ -40,6 +40,7 @@ export default function GameLanguageSelector({
       label={`${t('game.language', 'Language')}:`}
       htmlId="languagePick"
       value={installLanguage}
+      disabled={installLanguages?.length === 1}
       onChange={(e) => setInstallLanguage(e.target.value)}
     >
       {installLanguages &&