Unverified Commit 24c9885c authored by Pratham Patel's avatar Pratham Patel
Browse files

cosmic-workspaces-epoch: substitute fallback background path 

The directory `/usr/share/backgrounds/pop/` is not accessible on NixOS
because the directory `/usr` does not exist on NixOS. The package
`cosmic-wallpapers` exists in nixpkgs that provides the background image
that is used in the COSMIC DE's screenshots on the first-party
website[0]. Substitute the unreachable, FHS path with a valid path of
the background image from the Nix store.

Note: We are putting in a different fallback background path alltogether
but I believe that this is okay because that is used by upstream in
their marketing materials. Meaning, after substitution, we match
marketing screenshots from upstream.

[0]: https://system76.com/cosmic/
parent 5997b997

pkgs/by-name/co/cosmic-workspaces-epoch/package.nix

+17 −0
Original line number Diff line number Diff line
@@ -3,6 +3,7 @@ 
  stdenv,

  rustPlatform,

  fetchFromGitHub,

  cosmic-wallpapers,

  libcosmicAppHook,

  pkg-config,

  libinput,
@@ -23,6 +24,22 @@ rustPlatform.buildRustPackage (finalAttrs: { 
    hash = "sha256-3jivE0EaSddPxMYn9DDaYUMafPf60XeCwVeQegbt++c=";

  };



  postPatch = ''

    # While the `kate-hazen-COSMIC-desktop-wallpaper.png` image is present

    # in the `pop-wallpapers` package, we're using the Orion Nebula image

    # from NASA available in the `cosmic-wallpapers` package. Mainly because

    # the previous image was used in the GNOME shell extension and the

    # Orion Nebula image is widely used in the Rust-based COSMIC DE's

    # marketing materials. Another reason to use the Orion Nebula image

    # is that it's actually the default wallpaper as configured by the

    # `cosmic-bg` package's configuration in upstream [1] [2].

    #

    # [1]: https://github.com/pop-os/cosmic-bg/blob/epoch-1.0.0-alpha.6/config/src/lib.rs#L142

    # [2]: https://github.com/pop-os/cosmic-bg/blob/epoch-1.0.0-alpha.6/data/v1/all#L3

    substituteInPlace src/view/mod.rs \

      --replace-fail '/usr/share/backgrounds/pop/kate-hazen-COSMIC-desktop-wallpaper.png' "${cosmic-wallpapers}/share/backgrounds/cosmic/orion_nebula_nasa_heic0601a.jpg"

  '';



  useFetchCargoVendor = true;

  cargoHash = "sha256-l5y9bOG/h24EfiAFfVKjtzYCzjxU2TI8wh6HBUwoVcE=";