comment: if statement for command

Author: aignas

python/uv/private/lock.bzl

@@ -136,7 +136,7 @@ def _lock_impl(ctx):
     args.run_shell.add("--no-progress")
     args.run_shell.add("--quiet")
 
-    ctx.actions.run_shell(
+    if ctx.files.existing_output:
         command = '{python} -c {python_cmd} && "$@"'.format(
             python = getattr(python, "path", python),
             python_cmd = shell.quote(
@@ -145,7 +145,12 @@ def _lock_impl(ctx):
                     dst = output.path,
                 ),
             ),
-        ) if ctx.files.existing_output else '"$@"',
+        )
+    else:
+        command = '"$@"'
+
+    ctx.actions.run_shell(
+        command = command,
         inputs = srcs + ctx.files.existing_output,
         mnemonic = "PyRequirementsLockUv",
         outputs = [output],