ghc @8.10.1: test fails because python3 is not found

[ryandesign (Ryan Schmidt)]

Running sudo port test ghc fails because it needs python3:

:info:test python3 calibrate '/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-ryandesign-fork_lang_ghc/ghc/work/src/ghc-8.10.1/inplace/bin/ghc-stage1' > calibrate.out
:info:test /bin/sh: python3: command not found
:info:test make[2]: *** [calibrate.out] Error 127

The port already has a build dependency on python38 and uses it in the configure and build phases by adding "PATH=$env(PATH):${bootstrap_dir}/bin:${frameworks_dir}/Python.framework/Versions/${python3_version}/bin" to the environment; it probably just need to add that to test.env too.

[essandess (Steve Smith)]

See ​https://github.com/macports/macports-ports/pull/8523

[essandess (Steve Smith)]

In ab891551d4693be90aa6492b0f4e5b8d98cebf29/macports-ports (master):

ghc: Bugfixes for test and iconv linking

Fixes:

• #61223
• #61222
• #61221
• #61220
• #60171