First small set for 0.15

[JordanMartinez]

The prepare-0.15 branch will be the main target for merging v0.15.0-compatible packages into the initial v0.15.0-compatible package set. This is similar to what we did in the v0.14.0 ecosystem update (see #816). Right now, this set will not function until the core libraries are updated. We'll then add the contrib, web, and node libraries to this package set later.

Some libraries will work immediately after their dependencies compile. We can add those packages back to the package set once that occurs

Other libraries will work once their dependencies compile AND the author updates the library due to breaking changes.

This PR should not be used to quickly catch via CI any issues across the core, contrib, web, and node libraries as we update the ecosystem (e.g. #799). Rather, a separate PR can be created that triggers CI to check for specific issues until they are resolved.

[thomashoneyman]

We'll need this before CI will build: purescript/registry#359

[JordanMartinez]

In the last breaking release, we used a package set to verify that all core, contrib, web, and node libraries still compiled as we came across issues in the Coercible PR. However, this repo depends on something outside of core, easy-purescript-nix, which does not yet include the alpha release in its list of purs. justinwoo/easy-purescript-nix#187 added the alpha 01 release, but wasn't merged and did not get any feedback.

Is there a way to bypass this on our side? I'm not sure whether an alpha release should be in easy-purescript-nix, but this PR won't even start to compile until we can use v0.15.0 in CI.

[thomashoneyman]

As a stopgap solution we can point to the fork instead of easy-purescript-nix directly. In the long term it really would be better not to depend on that external repository for anything in core.

[JordanMartinez]

How do I pre-compute the sha256 hash? I tried using nix-fetch-git by running this script locally.

[thomashoneyman]

I think you're looking for nix-prefetch-git:

λ nix-prefetch-git https:/jordanmartinez/easy-purescript-nix

[thomashoneyman]

Oops, your 0.15 code is on the prepare-0.15 branch, so you want:

λ nix-prefetch-git https:/jordanmartinez/easy-purescript-nix --branch-name prepare-0.15
Initialized empty Git repository in /private/var/folders/yp/8s4nn7xs4nn2y854d46lqf680000gn/T/git-checkout-tmp-fdsOZJrY/easy-purescript-nix/.git/
remote: Enumerating objects: 54, done.
remote: Counting objects: 100% (54/54), done.
remote: Compressing objects: 100% (49/49), done.
remote: Total 54 (delta 18), reused 24 (delta 2), pack-reused 0
Unpacking objects: 100% (54/54), 36.02 KiB | 1.09 MiB/s, done.
From https:/jordanmartinez/easy-purescript-nix
 * branch            HEAD       -> FETCH_HEAD
Switched to a new branch 'prepare-0.15'
removing `.git'...

git revision is 3630943b74f681289ed87a0ed6c3e502556ddebb
path is /nix/store/irjdyrz88m9c96k13pqfdyqny4lgk5ii-easy-purescript-nix
git human-readable version is -- none --
Commit date is 2022-02-14 09:31:58 +0200
hash is 1i7zqda52npklj3d7pq80zw5rfjjzdqpl5bdrsp6vchg5frgj6ky
{
  "url": "https:/jordanmartinez/easy-purescript-nix",
  "rev": "3630943b74f681289ed87a0ed6c3e502556ddebb",
  "date": "2022-02-14T09:31:58+02:00",
  "path": "/nix/store/irjdyrz88m9c96k13pqfdyqny4lgk5ii-easy-purescript-nix",
  "sha256": "1i7zqda52npklj3d7pq80zw5rfjjzdqpl5bdrsp6vchg5frgj6ky",
  "fetchLFS": false,
  "fetchSubmodules": false,
  "deepClone": false,
  "leaveDotGit": false
}

Specifically, this means the rev and sha fields should be:

  "rev": "3630943b74f681289ed87a0ed6c3e502556ddebb",
  "sha256": "1i7zqda52npklj3d7pq80zw5rfjjzdqpl5bdrsp6vchg5frgj6ky",

[JordanMartinez]

Alright! CI is failing, but it's only because arrays doesn't compile yet, which is what we're currently on. There's some other warnings, but we'll deal with them separately.

[JordanMartinez]

MonadZero class and instances were removed. Just verifying that the package set still builds.

[JordanMartinez]

We'll need to update affjax-web and affjax-node for these changes:

• purescript-contrib/purescript-affjax-web@a148ae6
• purescript-contrib/purescript-affjax-node@f711f71

[thomashoneyman]

@JordanMartinez done!

[JordanMartinez]

Thanks!

[JordanMartinez]

Once this gets merged, we should update the easy-ps code to refer to the original repo, not my fork.