If anyone is running into the "mirrors.json is expired" issue, please see this issue for explanation and workaround:
Also, please feel free to weigh in with a vote on that issue.
Compiler thinks a type is different depending on where it is referenced
core:test
as a separate target from core:lib
, so the arrow should look likecore:lib -> testlib:lib -> core:test
core:lib
and core:test
the same target in some way?
stack install
begins downloading some old ghc version
resolver
version.
✗ stack install
Preparing to install GHC to an isolated location.
This will not interfere with any system-level installation.
ghc-8.6.4: 406.53 KiB / 215.76 MiB ( 0.18%) downloaded...^C
➜ ptghci git:(master) ✗ cat ~/.stack/config.yaml
# This file contains default non-project-specific settings for 'stack', used
# in all projects. For more information about stack's configuration, see
# http://docs.haskellstack.org/en/stable/yaml_configuration/
#
system-ghc: true