Revision history for jbi

0.2.0.0 -- 2018-02-07

Add a --version (and -V) flag to the executable.
jbi repl now takes an optional --repl-opts which is passed through to the underlying REPL (e.g. ghci).
- No longer supply -ferror-spans by default.
A --debug argument prints out all commands run.

This results in many API changes; as a sample:
- GlobalEnv has been renamed to ToolEnv
- A Config type is now provided for run-time configuration. This is now taken by most of the running commands.
- Env wraps the above two types and is an argument to most BuildTool commands.
Try and support benchmarking with cabal+nix where possible.

API change: the NixSupport type now contains information about nix-instantiate.
Better support for getting targets from stack.
If a build tool needs the version to check validity it has to explicitly obtain it.

API Changes:
- Change in canUseCommand in BuildTool class
- Change in command field in Valid data structure
- Change in canUseMode in CabalMode class
- Addition of needsMinCabal to CabalMode class
Other small tweaks to reduce the overhead of using jbi over the build tool itself (parallel validity checking, etc.).