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Bump go-m1cpu to v0.2.1 to fix crash on Apple M5 Pro - #3537

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Bump go-m1cpu to v0.2.1 to fix crash on Apple M5 Pro#3537
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@lichtzeichner

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Bump the go-m1cpu dependency to fix #3536

@lichtzeichner

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I looked at the failing CircleCI build, and it seems that it was a broken CI cache key.

@sean-

sean- commented Jun 8, 2026

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I looked at the failing CircleCI build, and it seems that it was a broken CI cache key.

Possibly fixed by thought-machine/please-servers#342 ?

@lichtzeichner

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I looked at the failing CircleCI build, and it seems that it was a broken CI cache key.

Possibly fixed by thought-machine/please-servers#342 ?

I don't think so. The issue I found was actually in the CircleCI config - but obviously this wasn't the issue causing the Segfault in CI. However, I'm unable to reproduce the CircleCI issue on an M4 Pro machine at all. Any Ideas what could cause this?

@peterebden

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I don't think this is still relevant any more? I can bootstrap fine on an M5 today, it looks like most of it has been merged in one way or another (apart from the circleci cache key thing, which is remarkably ancient).
Will close this and merge the circleci change separately - thanks for that!

@peterebden peterebden closed this Jul 23, 2026
peterebden added a commit that referenced this pull request Jul 23, 2026
Originally found in #3537 - have split this out because that was
overcome by various merge conflicts.

This is ancient, it looks like it _should_ have changed to go.mod
(probably when Go modules came out) but was missed, and has just hung
around ever since.
@lichtzeichner

lichtzeichner commented Jul 23, 2026

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Agree. I tested v17.31.2 - the build runs fine on my machine, and I also can run bootstrap.sh from a freshly cloned please repo.
You're welcome! :)

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plz segfaults on Apple M5 Pro immediately

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