Remove svn.macports.org distfiles fallback

[ryandesign (Ryan Carsten Schmidt)]

We should remove the svn.macports.org fallback for downloading distfiles. It has been many years since we told people not to put new distfiles there anymore.

Any ancient port that actually has its files stored there can specify master_sites macports, as these ports do:

$ find . -name Portfile | xargs grep -E 'master_sites[[:space:]]+macports[[:space:]]*$' 
./aqua/Freecell/Portfile:master_sites            macports
./aqua/macsword/Portfile:master_sites	macports
./devel/libcipher/Portfile:master_sites    macports
./devel/libgnugetopt/Portfile:master_sites	   macports
./fuse/sshfs-gui/Portfile:master_sites        macports
./games/fortune/Portfile:master_sites        macports
./games/wump/Portfile:master_sites	macports
./graphics/libxdkwrl/Portfile:master_sites        macports
./math/bcv/Portfile:master_sites	macports
./math/ocaml-buddy/Portfile:master_sites        macports
./net/fetch/Portfile:master_sites	macports
./net/libfetch/Portfile:master_sites	macports
./net/scotty/Portfile:master_sites            macports
./python/py-pipedream/Portfile:master_sites	macports
./sysutils/bdes/Portfile:master_sites	macports
./sysutils/port_cutleaves/Portfile:master_sites        macports
./textproc/flip/Portfile:master_sites    macports

[raimue (Rainer Müller)]

The fallback is defined in _resources/port1.0/fetch/mirror_sites.tcl​, so it is not actually a issue with base.

[ryandesign (Ryan Carsten Schmidt)]

It's a base issue; see browser:trunk/base/src/port1.0/portfetch.tcl?rev=146644#L119​

I don't know if we can just set fallback_mirror_site to empty or if we have to remove all references to fallback_mirror_site from the code.

[raimue (Rainer Müller)]

If we agree there is no need for a fallback anymore, here is a patch that removes it from base.

[raimue (Rainer Müller)]

Pull request: ​https://github.com/macports/macports-base/pull/5

[raimue (Rainer Müller)]

In da038b8/macports-base:

Remove svn.macports.org as fallback for distfiles

If a port really needs to use this, this can still be specified
explicitly with master_sites macports.

Closes: #52626
Closes: ​https://github.com/macports/macports-base/pull/5