EGL not working in NixOS

[Samueru-sama]

• vkcube works.
• glxgears works.
• eglgears_x11 and eglgears_wayland do not work however. Error with EGLUT: failed to initialize EGL Display.

---

 [gles-fwd.so] >> libGLESv2.so.2: 358 entry points, none resolved yet -- the host stack loads at the first GL call, not here
 [egl-fwd.so] >> libEGL.so.1: 44 entry points, none resolved yet -- the host stack loads at the first GL call, not here
 [gl-fwd.so] >> libGL.so.1: 3470 entry points, none resolved yet -- the host stack loads at the first GL call, not here
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libm.so.6
 [cross-libc-dlopen.so] >> global-scope lib libm.so.6: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libresolv.so.2
 [cross-libc-dlopen.so] >> global-scope lib libresolv.so.2: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: libcrypt.so.1
 [cross-libc-dlopen.so] >> global-scope lib libcrypt.so.1: absent
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libpthread.so.0
 [cross-libc-dlopen.so] >> global-scope lib libpthread.so.0: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libdl.so.2
 [cross-libc-dlopen.so] >> global-scope lib libdl.so.2: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/librt.so.1
 [cross-libc-dlopen.so] >> global-scope lib librt.so.1: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libutil.so.1
 [cross-libc-dlopen.so] >> global-scope lib libutil.so.1: loaded
 [cross-libc-dlopen.so] >> dlopen pass-through: libanl.so.1
 [cross-libc-dlopen.so] >> global-scope lib libanl.so.1: absent
 [cross-libc-dlopen.so] >> version-compat: pthread_cond_init@GLIBC_2.3.2 -> 0x7fac24a96eb0
 [cross-libc-dlopen.so] >> version-compat: pthread_cond_broadcast@GLIBC_2.3.2 -> 0x7fac24a96b80
 [cross-libc-dlopen.so] >> version-compat: pthread_cond_signal@GLIBC_2.3.2 -> 0x7fac24a96f00
 [cross-libc-dlopen.so] >> version-compat: pthread_cond_destroy@GLIBC_2.3.2 -> 0x7fac24a96e30
 [cross-libc-dlopen.so] >> dlopen pass-through: /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libEGL.so.1
 [egl-fwd.so] >> target /tmp/nix-shell-3766-1918791024/.mount_vkcubremp13487537443878114027/lib/libEGL.so.1 -- bundled dispatcher (nothing better on this host)
 [egl-fwd.so] >> libEGL.so.1: 44 of 44 entry points resolved from the bundled dispatcher (nothing better on this host) (44 exported, 0 via eglGetProcAddress, 0 absent)
EGLUT: failed to initialize EGL display
 [gl-fwd.so] >> libGL.so.1: not one entry point was called in this process
 [egl-fwd.so] >> libEGL.so.1: 2 of 44 entry points were CALLED (2 forwarded, 0 absent) out of 44 this host could resolve
 [gles-fwd.so] >> libGLESv2.so.2: not one entry point was called in this process

[Samueru-sama]

All good now: