* Add script for fixing materialized files
This is useful in two ways:
- We reference it in the error message, so users can more easily
copy-paste the correct call, rather than several lines of commands.
- We add it to `passthru`, so users can reference it directly when they
know they need to update the files, without having to first run a build
and find it on stderr.
* Add script for calculating the sha
This is useful in two ways:
- It makes it easier for users to copy from the message.
- We add it to `passthru` so users can call it directly if they know
they need to update the sha, without having to run a build and copy it
from stderr.
* Refactor unchecked a bit
Put the positive logic first, use the materialized files by preference
if they're there.
* Allow the updater script to take an argument
* Use double brackets
* Fix a dependency
* Separate generating and updating scripts
* Include `tests` in path for cross compiled tests
* Add ghc-boot-packages-nix to haskellNixRoots
* Fix naming warnings in tests sources
* Uses a single cleanGit call for all the tests
* Add memoize code for ghc-boot and ghc-extra pkgs
* Memoize ghc-boot and ghc-extra pkgs nix
* Fix release.nix being more strict than ci.nix by updating filterAttrsOnlyRecursive in ci-lib.nix
* Nicer errors when materialized path does not exist
* Updated materialization docs
* Add internalHackageIndexState to set the index-state used within haskell.nix
This change adds a `materialized` argument to the functions that
generate nix files with `plan-to-nix` and `stack-to-nix`.
* Provides `builtins.trace` messages with pointers on how to do so.
* Includes a `checkMaterialized` option that can be used
to verify the materialized files.
* Documents how to script updates with `plan-nix` or `stack-nix`.
* Outputs warnings if materialized files are used without hash
(or without an `index-state` for cabal projects).
* Provides materialized nix files for `alex`, `happy` and `hscolour`
