From 14169c10e7da972f9d0860ea31df845c0dcd25e9 Mon Sep 17 00:00:00 2001
From: ferdymercury <ferdymercury@users.noreply.github.com>
Date: Thu, 17 Sep 2026 09:22:53 +0200
Subject: [PATCH 1/2] [ci] fix typo in replicate build message

Fixes https://github.com/root-project/root/issues/23374
---
 .github/workflows/root-ci-config/build_root.py |  2 +-
 .../workflows/root-ci-config/build_utils.py    | 18 ++++++++++++------
 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/root-ci-config/build_root.py b/.github/workflows/root-ci-config/build_root.py
index b3dff0ad1ae20..b5ebd52922f8e 100755
--- a/.github/workflows/root-ci-config/build_root.py
+++ b/.github/workflows/root-ci-config/build_root.py
@@ -50,7 +50,7 @@ def main():
 
     args = parse_args()
 
-    build_utils.log = build_utils.Tracer(args.platform_config, args.dockeropts)
+    build_utils.log = build_utils.Tracer(args.platform, args.platform_config, args.dockeropts)
 
     pull_request = args.head_ref and args.head_ref != args.base_ref
 
diff --git a/.github/workflows/root-ci-config/build_utils.py b/.github/workflows/root-ci-config/build_utils.py
index 9ca76bd3438c9..8e3d81f7ff591 100755
--- a/.github/workflows/root-ci-config/build_utils.py
+++ b/.github/workflows/root-ci-config/build_utils.py
@@ -56,12 +56,14 @@ class Tracer:
     Trace command invocations and print them to reproduce builds.
     """
 
-    image = ""
+    platform = ""
+    platform_config = ""
     docker_opts = []
     trace = ""
 
-    def __init__(self, image: str, docker_opts: str):
-        self.image = image
+    def __init__(self, platform: str, platform_config: str, docker_opts: str):
+        self.platform = platform
+        self.platform_config = platform_config
         if docker_opts:
             self.docker_opts = docker_opts.split(' ')
         if '--rm' in self.docker_opts:
@@ -73,16 +75,20 @@ def add(self, command: str) -> None:
     @github_log_group("To replicate this build locally")
     def print(self) -> None:
         if self.trace != "":
-            if self.image and not is_macos():
+            if self.platform and not is_macos():
                 print(f"""\
 # Grab the image and set up the python virtual environment:
-docker run {' '.join(self.docker_opts)} -it registry.cern.ch/root-ci/{self.image}:buildready
+docker run {' '.join(self.docker_opts)} -it registry.cern.ch/root-ci/{self.platform}:buildready
 if [ -d /py-venv/ROOT-CI/bin/ ]; then . /py-venv/ROOT-CI/bin/activate && echo PATH=$PATH >> $GITHUB_ENV; fi
+""")
+                if self.platform != self.platform_config:
+                    print(f"""\
+# Here you need to set manually flags from {self.platform_config} when configuring
 """)
             print(self.trace)
 
 
-log = Tracer("", "")
+log = Tracer("", "", "")
 
 
 def print_fancy(*values, sgr=1, **kwargs) -> None:

From f3950a4d1f798b097b4629807101960817e097ee Mon Sep 17 00:00:00 2001
From: ferdymercury <ferdymercury@users.noreply.github.com>
Date: Thu, 17 Sep 2026 12:05:17 +0200
Subject: [PATCH 2/2] [nfc] fix comment

CMake flags will already contain the right overrides
---
 .github/workflows/root-ci-config/build_utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/root-ci-config/build_utils.py b/.github/workflows/root-ci-config/build_utils.py
index 8e3d81f7ff591..08fb2cb84abee 100755
--- a/.github/workflows/root-ci-config/build_utils.py
+++ b/.github/workflows/root-ci-config/build_utils.py
@@ -83,7 +83,7 @@ def print(self) -> None:
 """)
                 if self.platform != self.platform_config:
                     print(f"""\
-# Here you need to set manually flags from {self.platform_config} when configuring
+# Note that the variant {self.platform_config} will be used when configuring
 """)
             print(self.trace)