Compilation message with MPI extension

[ranocha]

I wanted to draft a version with a package extension for MPI so that we can still include the info message

[ Info: You just called `trixi_include`. Julia may now compile the code, please be patient.

However, the first naive approach doesn't work nicely since we're not allowed to overwrite method definitions while precompiling. Thus, I needed to deactivate precompilation for the extension, resulting in the ugly messages

julia> using MPI, TrixiBase
[ Info: Precompiling TrixiBaseMPIExt [722ac391-ce67-58c0-be25-224aa07e4d5d]
[ Info: Skipping precompilation since __precompile__(false). Importing TrixiBaseMPIExt [722ac391-ce67-58c0-be25-224aa07e4d5d].

julia> trixi_include("test/dummy.jl")
[ Info: You just called `trixi_include`. Julia may now compile the code, please be patient.
Hello

We can not use something in __init__ since that will be called before Trixi.jl is initialized - i.e., before MPI is initialized in general.

[sloede]

Could this work (untried) and is not too dirrrty?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1dc5a93) 93.65% compared to head (8bebfd9) 94.36%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #5      +/-   ##
==========================================
+ Coverage   93.65%   94.36%   +0.71%     
==========================================
  Files           4        4              
  Lines          63       71       +8     
==========================================
+ Hits           59       67       +8     
  Misses          4        4              

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[sloede]

LGTM, thanks! If @efaulhaber approves, this can be merged imho (don't mind the missing format check, that's dependent on another PR be to merged)

[efaulhaber]

Can we somehow export this as well when importing TrixiBase from a testing environment? Then we can avoid duplicating this function from Trixi.

[sloede]

@ranocha?

[sloede]

@efaulhaber Maybe we can move this convo to a separate issue such that we can merge this PR (once you approve) and then start the registration process?

[ranocha]

We would need to move this macro to the plain source code of the package and make TrixiBase.jl depend on Test.

[ranocha]

Note that the default

ignore_content = Any["[ Info: You just called `trixi_include`. Julia may now compile the code, please be patient.\n"]

set below will likely also depend on the specific package we're using. For example, we have more stuff in Trixi.jl.

[efaulhaber]

So there is no nice way to do it? Maybe add Test as a soft dependency or so?

[ranocha]

As @sloede said, I'm fine discussing this further in an issue and merging this soon to start the registration process.

[ranocha]

I tend to prefer moving this to a TrixiTest.jl package to avoid depending on Test etc. everywhere

[sloede]

Moved to #9. Your points are absolutely valid @efaulhaber, I just wanted to make sure we can move forward with the current state.

[sloede]

@ranocha I think the error message is not yet properly filtered out:
https://github.com/trixi-framework/TrixiBase.jl/actions/runs/7711136543/job/21015911732?pr=5#step:7:65

[github-actions]

Pull Request Test Coverage Report for Build 7726527485

• 7 of 7 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.7%) to 94.366%

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Totals
Change from base Build 7711120067:	0.7%
Covered Lines:	67
Relevant Lines:	71

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💛 - Coveralls

[ranocha]

@ranocha I think the error message is not yet properly filtered out: https://github.com/trixi-framework/TrixiBase.jl/actions/runs/7711136543/job/21015911732?pr=5#step:7:65

Should be fixed