cmake @3.31.7: checksum mismatch because download is HTML file

[ryandesign (Ryan Carsten Schmidt)]

The cmake port failes to fetch the right file:

% sudo port fetch --no-mirrors cmake
--->  Fetching distfiles for cmake
--->  Attempting to fetch cmake-3.31.7.tar.bz2 from https://gitlab.kitware.com/cmake/cmake/-/archive/v3.31.7
% sudo port che  cmake              
--->  Verifying checksums for cmake
Error: Checksum (rmd160) mismatch for cmake-3.31.7.tar.bz2
Error: Checksum (sha256) mismatch for cmake-3.31.7.tar.bz2
Error: Checksum (size) mismatch for cmake-3.31.7.tar.bz2
***
The non-matching file appears to be HTML. See this page for possible reasons
for the checksum mismatch:
<https://trac.macports.org/wiki/MisbehavingServers>
***
The file has been moved to: /opt/local/var/macports/distfiles/cmake/cmake-3.31.7.tar.bz2.html
Error: Failed to checksum cmake: Unable to verify file checksums
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cmake/cmake/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.
Error: Processing of port cmake failed

This is because, as explained ​here,

On Friday, Kitware enabled Anubis to filter out traffic from AI scrapers that was making gitlab.kitware.com unusable.

The ideal fix is to update the cmake port to a newer version while switching to the release distfile.

[ryandesign (Ryan Carsten Schmidt)]

A slightly different solution will be needed for cmake-devel. Downloading from the github mirror instead of gitlab is one possibility.

[ryandesign (Ryan Carsten Schmidt)]

I used the contact form on the Kitware web site to ask them to investigate the feasibility of removing anubis protection from the file download URLs.

[tva-inverso (Thomas Vandahl)]

I resolved my case by blacklisting gitlab.kitware.com in macports.conf

[szhorvat (Szabolcs Horvát)]

I came to the issue tracker to request an update of cmake-devel to 4.2.0, as I wasn't able to do it myself due to this issue.

I'm looking forward to the update, as I rely on MacPorts to test my software with newer tooling.

[Dave-Allured (Dave Allured)]

@szhorvat cmake-devel is now updated to 4.2.1. Please test and report any problems. Thanks.

I am looking at next addressing the requests in #73236 for cmake-devel.