[mono] properly support HEAD building

[haf]

http://www.mono-project.com/docs/compiling-mono/mac/#building-mono-from-a-release-package

[mistydemeo]

Can you provide build logs (brew gist-logs mono) for the build that failed in #36766? Thanks!

[mistydemeo]

The error is:

*** The compiler 'mcs' doesn't appear to be usable.
*** Trying the 'monolite' directory.
Corlib not in sync with this runtime: expected corlib version 117, found 111.
Loaded from: /private/tmp/mono-nEz281/mcs/class/lib/monolite/mscorlib.dll
Download a newer corlib or a newer runtime at http://www.mono-project.com/download.

Looks like HEAD requires a newer monolite to build.

[haf]

I'm not getting that error message https://gist.github.com/anonymous/797deb26ad692fbf60ba

To fix your error I can change this piece of the formula:

  1 ¬
  2   resource "monolite" do¬
  3     magic_number = "111"¬
  4     url "http://storage.bos.xamarin.com/mono-dist-master/cb/cb33b94c853049a43222288ead1e0cb059b227    83/monolite-111-latest.tar.gz"¬
  5     sha1 "a674c47cd60786c49185fb3512410c43689be43e"¬
  6   end¬

However, do we have the same error, to start with?

The builds are taken from here: https://wrench.mono-project.com/Wrench/ViewWorkTable.aspx?lane_id=4&host_id=21&command_id=374

I could code ruby to pick the latest version based on the link -- the magic number is the MONO_CORLIB_VERSION which needs to be 117 in your case.

Can I get the sha1-commit-hash of the HEAD from the formula DSL, somehow? That would solve the problem of finding the path, given that I can make monolite-latest.tgz the name o the file.

I'm having a conversation in general about making this build more repeatable - if you would comment with all your experience in making homebrew work, it would add considerable value to the discussion.

[jacknagel]

PR no longer applies cleanly; what is the status here?

[haf]

You didn't respond so it became stale; the PR needs to be updated with the latest monolite.

[jacknagel]

Can I get the sha1-commit-hash of the HEAD from the formula DSL, somehow?

You can get it at build-time (during install) by asking git for it (e.g. git rev-parse HEAD or similar), the full git repo is present for the build.

[DomT4]

Any update here?

[haf]

@DomT4 No time here. I suggest you pick up where I left off and send a new PR with both mine and your changes and then we'll merge that PR instead.

[MikeMcQuaid]

Passing on this.