error: builder for '/nix/store/mhqr7m4vi642p9p4a0lcj8p3y3j73fln-wlx-overlay-s-25.4.2.drv' failed with exit code 101;
       last 25 log lines:
       >    --> src/gui/canvas/mod.rs:180:27
       >     |
       > 180 |     pub const fn data_mut(&mut self) -> &mut D {
       >     |                           ^^^^^^^^^
       >     |
       >     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
       >
       > error[E0658]: mutable references are not allowed in constant functions
       >    --> src/gui/canvas/mod.rs:180:41
       >     |
       > 180 |     pub const fn data_mut(&mut self) -> &mut D {
       >     |                                         ^^^^^^
       >     |
       >     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
       >
       > error[E0658]: mutable references are not allowed in constant functions
       >    --> src/gui/canvas/mod.rs:181:9
       >     |
       > 181 |         &mut self.data.data
       >     |         ^^^^^^^^^^^^^^^^^^^
       >     |
       >     = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
       >
       > For more information about this error, try `rustc --explain E0658`.
       > error: could not compile `wlx-overlay-s` (bin "wlx-overlay-s") due to 9 previous errors
       For full logs, run 'nix log /nix/store/mhqr7m4vi642p9p4a0lcj8p3y3j73fln-wlx-overlay-s-25.4.2.drv'.

seems to be an outdated rustc problem