To avoid the following warning while using `lib.getExe`:
```
warning: getExe: Package wezterm does not have the meta.mainProgram attribute. We'll assume that the main program has the same name for now, but this behavior is deprecated, because it leads to surprising errors when the assumption does not hold. If the package has a main program, please set `meta.mainProgram` in its definition to make this warning go away. Otherwise, if the package does not have a main program, or if you don't control its definition, use getExe' to specify the name to the program, such as lib.getExe' foo "bar".
```
The issue comes from 8c9ab05fb4 which
changed where `sqlite-cache` is retrieved from:
```diff
diff --git a/sync-color-schemes/Cargo.toml b/sync-color-schemes/Cargo.toml
index b1cc34f8a..0fbf28059 100644
--- a/sync-color-schemes/Cargo.toml
+++ b/sync-color-schemes/Cargo.toml
-sqlite-cache = "0.1.3"
+sqlite-cache = {git="https://github.com/losfair/sqlite-cache", rev="0961b50385ff189bb12742716331c05ed0bf7805" }
```
When a dependency is retrieved from git, Nix needs the resulting hash in
Nix format (a combination of sha256 + Nix stuff), hence this change.
