Fixing broken cursors on NixOS

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I wrote a blog post about how I fixed broken cursors in apps like xterm. Hopefully someone else will find it useful.

11 Likes
2

Nice gallery btw.

There are any change of adding tags (to filter all nix related content) to your posts?

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I have so few posts, it never occurred to me that anyone would need to filter them :joy: I’ve now added tags though, you can find Nix-only posts at nixos - david’s assorted web pages

1 Like
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Regarding your workaround for “Too many rebuilds” You could simply override only xterm from the start with:

final: prev: {
my-xterm = prev.xterm.overrideAttrs (old: {
  patches = old.patches ++ [
    (final.writeText "xterm-load-xcursor.patch" ''
      --- a/main.c
      +++ b/main.c
      @@ -94,4 +94,5 @@
       #include <graphics.h>

      +#include <dlfcn.h>
       #if OPT_TOOLBAR

      @@ -2510,4 +2512,6 @@ main(int argc, char *argv[]ENVP_ARG)
       #endif /* } TERMIO_STRUCT */

      +    // dlopen once here so it's cached when libX11 tries to dlopen it
      +    dlopen("${final.xorg.libXcursor}/lib/libXcursor.so.1", RTLD_LAZY);
           /* Init the Toolkit. */
           {
      '')
  ];
});
}

And use pkgs.my-xterm in environment.systemPackages.

Thanks for investigating this issue!

1 Like
5

True, but my window manager (notion) has a direct dependency on xterm, and I wanted that to point to the right one. I guess I could explicitly override that one also, of course.

6

Thanks,

Added to the list
https://coggle.it/diagram/Y9k9VVmUw-1okyFh/t/nix-language/6308e4b6557222319df898379a8ecb073fe18b3647745866b12ca882e5919cd2

I had to move them to landscape