update: add update.narrow configuration option

If true, 'west update' is always '--narrow'.

Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>

src/west/app/project.py

@@ -804,6 +804,11 @@ class Update(_ProjectCommand):
 
         self.group_filter: List[str] = []
 
+        if args.narrow:
+            self.narrow = True
+        else:
+            self.narrow = config.getboolean('update', 'narrow', fallback=False)
+
         def handle(group_filter_item):
             item = group_filter_item.strip()
             if not item.startswith(('-', '+')):
@@ -1201,7 +1206,7 @@ class Update(_ProjectCommand):
         # non-commit object" error when the revision is an annotated
         # tag. ^{commit} type peeling isn't supported for the <src> in a
         # <src>:<dst> refspec, so we have to do it separately.
-        if _maybe_sha(rev) and not self.args.narrow:
+        if _maybe_sha(rev) and not self.narrow:
             # We can't in general fetch a SHA from a remote, as some hosts
             # forbid it for security reasons. Let's hope it's reachable
             # from some branch.
@@ -1222,7 +1227,7 @@ class Update(_ProjectCommand):
         log.small_banner(f'{project.name}: fetching, need revision {rev}')
         # --tags is required to get tags if we're not run as 'west
         # update --narrow', since the remote is specified as a URL.
-        tags = (['--tags'] if not self.args.narrow else [])
+        tags = (['--tags'] if not self.narrow else [])
         clone_depth = (['--depth', str(project.clone_depth)] if
                        project.clone_depth else [])
         # -f is needed to avoid errors in case multiple remotes are

tests/test_project.py

@@ -1040,17 +1040,27 @@ def setup_narrow(tmpdir):
 
 
 def test_update_narrow(tmpdir):
-    # Test that 'west update --narrow' doesn't fetch tags.
+    # Test that 'west update --narrow' doesn't fetch tags, and that
+    # 'west update' respects the 'update.narrow' config option.
 
     remote, workspace = setup_narrow(tmpdir)
+    workspace.chdir()
 
-    cmd('update --narrow', cwd=workspace)
-
-    tags = subprocess.check_output(
+    def project_tags():
+        return subprocess.check_output(
             [GIT, 'tag', '--list'], cwd=workspace / 'project'
         ).decode().splitlines()
 
-    assert tags == []
+    cmd('update --narrow')
+    assert project_tags() == []
+
+    cmd('config update.narrow true')
+    cmd('update')
+    assert project_tags() == []
+
+    cmd('config update.narrow false')
+    cmd('update')
+    assert project_tags() != []
 
 
 def test_update_narrow_depth1(tmpdir):