ci: wiki: support only running for changed devices

The device wiki check currently runs for *all* devices in any given
MR, and can sometimes fail (e.g. if someone edits the wiki for some
unrelated device.) It's not fair to block MRs for devices when the
check fails on unrelated devices. This changes the default behavior to
only run on devices that are changed in the branch. This also adds an
`--all` flag that restores the previous behavior, this could be run on
the pmaports master branch to test general compliance for all devices
without blocking MRs where the check fails for unrelated devices.

Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7098>

.ci/lib/check_devices_in_wiki.py

@@ -7,6 +7,8 @@ import argparse
 import sys
 import urllib.request
 
+# Same dir
+import common
 
 def get_devices() -> list[str]:
     """:returns: list of all devices"""
@@ -94,13 +96,23 @@ def main() -> int:
     parser.add_argument("--path", help="instead of downloading the devices"
                         " page from the wiki, use a local HTML file",
                         type=Path, default=None)
+    parser.add_argument("--all", help="check all devices (default: check only"
+                        " devices changed from branch point)",
+                        action="store_true")
     args = parser.parse_args()
 
-    # Check all devices
     html = get_wiki_devices_html(args.path)
     html["renamed"] = get_wiki_renamed_devices_html()
     error = False
-    for device in get_devices():
+    devices = []
+    if args.all:
+        devices = get_devices()
+    else:
+        devices = common.get_changed_devices()
+        # remove 'device-' prefix
+        devices = [d[7:] for d in devices]
+        devices = [d.removesuffix("-downstream") for d in devices]
+    for device in devices:
         if not check_device(device, html, args.booting):
             error = True
 

.ci/lib/common.py

@@ -184,3 +184,10 @@ def get_changed_kernels():
         if pkgname.startswith("linux-"):
             ret += [pkgname]
     return ret
+
+def get_changed_devices():
+    ret = []
+    for pkgname in get_changed_packages():
+        if pkgname.startswith("device-"):
+            ret += [pkgname]
+    return ret

.ci/wiki.sh

@@ -7,9 +7,11 @@
 if [ "$(id -u)" = 0 ]; then
 	set -x
 	apk -q add \
+		git \
 		python3
 	exec su "${TESTUSER:-build}" -c "sh -e $0"
 fi
 
 set -x
-.ci/lib/check_devices_in_wiki.py --booting
+# shellcheck disable=SC2068
+.ci/lib/check_devices_in_wiki.py --booting $@