haskellPackages.blank-canvas: 0.6.3 -> 0.6.2

[endgame]

Motivation for this change

blank-canvas-0.6.3 depends on base-compat-batteries-0.10, which
depends on base-compat-0.10. This conflicts with the rest of the LTS
set, which uses base-compat-0.9. No base-compat-batteries-0.9 exists.

blank-canvas-0.6.2 only depends on base-compat >= 0.8 && < 0.10.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.

---

[peti]

Wouldn't it make more sense to add base-compat-batteries == 0.10.* so that we can build the latest version of blank-canvas instead?

[endgame]

Quite possible. I held back base-compat-batteries because base-compat-0.9.3 is still what's being used in stackage nightlies.

I made a test stack project on LTS-11.7, added base-compat-0.10.1 to extra-deps and added every revdep stackage knew about that was in the LTS snapshot and tried to build:

In the dependencies for aeson-1.2.4.0:
    base-compat-0.10.1 from stack configuration does not match >=0.9.1 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> aeson-1.2.4.0

In the dependencies for haxr-3000.11.2:
    base-compat-0.10.1 from stack configuration does not match >=0.8 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> haxr-3000.11.2

In the dependencies for rest-core-0.39:
    base-compat-0.10.1 from stack configuration does not match >=0.8 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> rest-core-0.39

In the dependencies for rest-snap-0.3.0.0:
    base-compat-0.10.1 from stack configuration does not match >=0.8 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> rest-snap-0.3.0.0

In the dependencies for rest-types-1.14.1.2:
    base-compat-0.10.1 from stack configuration does not match >=0.8 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> rest-types-1.14.1.2

In the dependencies for tdigest-0.1:
    base-compat-0.10.1 from stack configuration does not match >=0.9.1 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> tdigest-0.1

In the dependencies for wl-pprint-text-1.1.1.0:
    base-compat-0.10.1 from stack configuration does not match >=0.9 && <0.10 (latest matching version is 0.9.3)
needed due to z-0.1.0.0 -> wl-pprint-text-1.1.1.0

So it seems like a decent number of packages haven't fixed their bounds for base-compat-0.10. Which way do you want me to take this? Holding back blank-canvas or pushing a bunch of other stuff forward?

[peti]

I see! Well, I think you should choose whatever solution works best for you. Maybe it's too soon to upgrade to base-compat-batteries == 0.10.x.