By popular demand a set of "legacy suite" deb packages is now available

[willend]

Even though support for McStas 2.7.2 and McXtrace 1.7.1 has formally ended, these releases are apparently deeply rooted in the community... So by popular demand I have added a set of "legacy-suite-packages" to allow installation:

mcstas-suite-perl-legacy - A metapackage for McStas + perl tools
mcstas-suite-python-legacy - A metapackage for McStas + python tools
mcxtrace-suite-perl-legacy - A metapackage for McXtrace + perl tools
mcxtrace-suite-python-legacy - A metapackage for McXtrace + python tools

(available for x86_64 and arm64 Linux)

But PLEASE bear in mind that you really should upgrade to 3.5.1 instead. Use the wiki!