overlays.nix

let

  # Define overlay from SHA256 and URL
  addOverlay = sha256: url: let
    tarball = (builtins.fetchTarball { inherit url sha256; });
  in
    import tarball;

  # Define overlay from GitHub repo
  addGitHubOverlay = repo: commit: sha256: let
    tarballUrl = "https://github.com/${repo}/archive/${commit}.tar.gz";
  in
    (addOverlay sha256 tarballUrl);


in [

  # Rust from Mozilla's overlay
  #(addGitHubOverlay
  #  "mozilla/nixpkgs-mozilla"
  #  "78e723925daf5c9e8d0a1837ec27059e61649cb6"
  #  "0k3jxk21s28jsfpmqv39vyhfz2srfm81kp4xnpzgsbjn77rhwn03")

  # Movelang.nvim (upstream)
  #(let commit  = "924db60a119e9464304859634141def692b3c6f6";
  #     url     = "https://github.com/fishman/movelang.nvim/archive/${commit}.tar.gz";
  #     sha256  = "12yk8i3b3dxpl8mxy5m19prg5mzpkm9lbrnlq301fs1ffxid9qsv";
  #     source  = builtins.fetchTarball { inherit url sha256; };
  #     overlay = import "${source}/nix/plugin-overlay.nix";
  #in (overlay { name = "movelang"; self = source; }))

  # Movelang.nvim (vendored)
  (let source  = ./packages/ide/movelang.nvim;
       overlay = import "${source}/nix/plugin-overlay.nix";
  in (overlay { name = "movelang"; self = source; }))

  # Neovim nightly
  #(ghOverlay
    #"nix-community/neovim-nightly-overlay"
    #"2a37ff325707cbe46dab1ff1d89ed340e46cd440"
    #"0l109bmmnbby7szp3inh9czvla26czxmcwndyjfc8zkkmad3qlw7")

  # Our custom packages
  (import ./packages/overlay.nix)

]