dotnet: allow specifying the --runtime argument multiple times

When doing so, `dotnet restore` gets executed once for each runtime,
creating a file that contains all the required sources.

Author: Parnassius

dotnet/flatpak-dotnet-generator.py

@@ -21,7 +21,7 @@ def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('output', help='The output JSON sources file')
     parser.add_argument('project', help='The project file')
-    parser.add_argument('--runtime', '-r', help='The target runtime to restore packages for')
+    parser.add_argument('--runtime', '-r', nargs='+', default=[None], help='The target runtime to restore packages for')
     parser.add_argument('--freedesktop', '-f', help='The target version of the freedesktop sdk to use', 
                         default=freedesktop_default)
     parser.add_argument('--dotnet', '-d', help='The target version of dotnet to use', 
@@ -34,18 +34,19 @@ def main():
     sources = []
 
     with tempfile.TemporaryDirectory(dir=Path()) as tmp:
-        runtime_args = []
-        if args.runtime:
-            runtime_args.extend(('-r', args.runtime))
+        for runtime in args.runtime:
+            runtime_args = []
+            if runtime is not None:
+                runtime_args.extend(('-r', runtime))
 
-        subprocess.run([
-            'flatpak', 'run',
-            '--env=DOTNET_CLI_TELEMETRY_OPTOUT=true',
-            '--env=DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true',
-            '--command=sh', f'--runtime=org.freedesktop.Sdk//{args.freedesktop}', '--share=network',
-            '--filesystem=host', f'org.freedesktop.Sdk.Extension.dotnet{args.dotnet}//{args.freedesktop}', '-c',
-            f'PATH="${{PATH}}:/usr/lib/sdk/dotnet{args.dotnet}/bin" LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/lib/sdk/dotnet{args.dotnet}/lib" exec dotnet restore "$@"',
-            '--', '--packages', tmp, args.project] + runtime_args)
+            subprocess.run([
+                'flatpak', 'run',
+                '--env=DOTNET_CLI_TELEMETRY_OPTOUT=true',
+                '--env=DOTNET_SKIP_FIRST_TIME_EXPERIENCE=true',
+                '--command=sh', f'--runtime=org.freedesktop.Sdk//{args.freedesktop}', '--share=network',
+                '--filesystem=host', f'org.freedesktop.Sdk.Extension.dotnet{args.dotnet}//{args.freedesktop}', '-c',
+                f'PATH="${{PATH}}:/usr/lib/sdk/dotnet{args.dotnet}/bin" LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/lib/sdk/dotnet{args.dotnet}/lib" exec dotnet restore "$@"',
+                '--', '--packages', tmp, args.project] + runtime_args)
 
         for path in Path(tmp).glob('**/*.nupkg.sha512'):
             name = path.parent.parent.name