Cardano Updates

3038: Removed MsgKThxBye r=coot a=coot



Co-authored-by: Marcin Szamotulski <[email protected]>

This is a draft commit.

3061: Add Haskell-Language-Server as a build input to the shell environment. r=Jasagredo a=Jasagredo

Adds the Haskell-Language-Server currently at version 1.1.0 (not yet released
in Hackage) through a niv dependency.

For a final user, adding this is fine because it is cached by Hydra so it will 
just download the whole shell.

Incidentally:
- Using the same set of nixpkgs as for the rest of the build when providing
  it to Niv for non-builtin fetchers.
- Replaced the sources.nix file with a newer generated version (probably this
  should actually be updated each time we update the niv version).
- Also rephrase how stylish-haskell was being built as we can just point
  to the repository at a specific branch with niv.
- Adding .envrc to .gitignore as not everybody uses lorri.

Co-authored-by: Pawel Szulc <[email protected]>

Co-authored-by: Javier Sagredo <[email protected]>

Adds the Haskell-Language-Server currently at version 1.1.0 (not yet released
in Hackage) through a niv dependency.

For a final user, adding this is fine because it is cached by Hydra so it will
just download the whole shell.

Incidentally:

    Using the same set of nixpkgs as for the rest of the build when providing
    it to Niv for non-builtin fetchers.
    Replaced the sources.nix file with a newer generated version (probably this
    should actually be updated each time we update the niv version).
    Also rephrase how stylish-haskell was being built as we can just point
    to the repository at a specific branch with niv.
    Adding .envrc to .gitignore as not everybody uses lorri.

Co-authored-by: Pawel Szulc [email protected]

This is a draft commit.

Adds the Haskell-Language-Server currently at version 1.1.0 (not yet released
in Hackage) through a niv dependency.

For a final user, adding this is fine because it is cached by Hydra so it will
just download the whole shell.

Incidentally:

    Using the same set of nixpkgs as for the rest of the build when providing
    it to Niv for non-builtin fetchers.
    Replaced the sources.nix file with a newer generated version (probably this
    should actually be updated each time we update the niv version).
    Also rephrase how stylish-haskell was being built as we can just point
    to the repository at a specific branch with niv.
    Adding .envrc to .gitignore as not everybody uses lorri.

Co-authored-by: Pawel Szulc [email protected]

This reverts commit 73e6e0faa5dd5a189b2d83df4669fdc4d222f3e0.

As suggested, using the nixpkgs from haskell.nix helps to get more cache hits
when we are directly building locally derivations. In order to have Hydra build
the shell for us, we need to provide a nixpkgs entry in sources.json as it isn't
available on Hydra by default.

This will mean that particularly starting a shell locally will complain as we
won't use the nixpkgs from haskell.nix but it is fine because the pinned version
of nixpkgs is the same one that is pinned by haskell.nix, so we can still get
those cache hits.

And Hydra will build the shell for us, so for a final user this is much more
easy as it will copy everything from Hydra without building the shell locally.

structure and to fit readLocalRootPeers signature

Refactored after rebase onto p2p-master