What steps will reproduce the bug?

1. Up-to-date Arch system
2. cargo install bat
3. Oh, I guess onig-sys is broken. Let's try application minus regex-onig: cargo install bat --no-default-features --features regex-fancy,wild,paging,etcetera,clap,bugreport,build-assets,git

Workaround: CC=clang cargo install bat. (In case anyone is reading this looking for a solution.)

What happens?

Extremely long error spew about onig-sys failing to compile when installing the default. When trying to reassemble application, a much simpler error:

error[E0425]: cannot find function `get_pager_executable` in module `bat::config`
   --> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bat-0.25.0/src/bin/bat/main.rs:283:30
    |
283 |     let pager = bat::config::get_pager_executable(
    |                              ^^^^^^^^^^^^^^^^^^^^ not found in `bat::config`
    |
note: found an item that was configured out
   --> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bat-0.25.0/src/config.rs:113:8
    |
113 | pub fn get_pager_executable(config_pager: Option<&str>) -> Option<String> {
    |        ^^^^^^^^^^^^^^^^^^^^
note: the item is gated here
   --> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/bat-0.25.0/src/config.rs:112:1
    |
112 | #[cfg(all(feature = "minimal-application", feature = "paging"))]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

What did you expect to happen instead?

cargo install bat should work. Failing that, don't gate mandatory functionality behind feature groups, so it's at least clear without spelunking whether this is even possible. If this is an actual requirement, tie it to the actual feature required; if it's not required, delete it.

How did you install bat?

You get one guess /lighthearted

bat version and environment

bat version: 0.25.0 is what it's trying to install. Obviously with install broken I can't use --diagnostic.
environment: Fully up-to-date Arch system where cc means gcc 15.1.1 20250425