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Add reproducibility instructions

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Julien Papasian 2025-11-11 11:02:14 +01:00
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@ -42,6 +42,22 @@ You can omit any of the following properties to let the user configure their own
10) Update GitHub release notes draft and publish.
11) Update GitHub templates in `.github/` to show the new latest version.
If anything goes bad (such as reproducibility issue), you can remove the tag using `git push origin :v6.x.y && git tag --delete v6.x.y` and trigger a new build.
# Reproducibility
APKs are generated by a GitHub action from the public source code, guaranteeing they are always generated in the same conditions.
As of 2025-11-11, the environment used is Ubuntu 24.04 (x64), with 4 CPU cores and 16 GB RAM.
If you have more than 4 CPU cores, you may need to run the following to ensure the CPU cores match with the GitHub runner, or you may end up with [differences in the `baseline.prof` file](https://f-droid.org/docs/Reproducible_Builds/#bug-baselineprof-not-deterministic):
```shell
export CPUS_MAX=16 # Replace with your number of CPU cores
export CPUS=4
for (( c=$CPUS_MAX; c<$CPUS; c++ )) ; do echo 0 > /sys/devices/system/cpu/cpu$c/online; done
```
# Adding a new source