fix: remove dependcy on clang & mold

This was only added to try and improve compile times.

Re-measuring the difference after months of work and refactoring, the
gain from the additional requirements was marginal (39.8s -> 37.5s).

So, to simplify the requirement, clang and mold have been removed.

Closes: kemitix/git-next#131

.cargo/config.toml

@@ -1,11 +1,4 @@
 # ./cargo/config.toml
-[target.x86_64-unknown-linux-gnu]
-linker = "/usr/bin/clang-16"
-rustflags = [
-  "-C",
-  "link-arg=--ld-path=/usr/bin/mold",
-]
-
 [profile.dev]
 debug = 0
 strip = "debuginfo"

Dockerfile.builder

@@ -1,7 +1,7 @@
 FROM docker.io/rust:1.80.0-bookworm
 
 RUN apt-get update && \
-  apt-get install -y clang-16 mold libdbus-1-dev && \
+  apt-get install -y libdbus-1-dev && \
   curl -L https://github.com/cargo-bins/cargo-binstall/releases/latest/download/cargo-binstall-x86_64-unknown-linux-musl.tgz -o cargo-binstall.tgz && \
   tar -xzf cargo-binstall.tgz && \
   rm cargo-binstall.tgz && \
@@ -15,8 +15,6 @@ RUN cargo chef --version
 RUN rustfmt --version
 RUN cargo fmt --version
 RUN cargo clippy --version
-RUN mold --version
-RUN clang-16 --version
 RUN cargo --version
 RUN rustc --version
 RUN rustup --version

crates/cli/README.md

@@ -32,13 +32,6 @@ See [Behaviour](#behaviour) to learn how we do this.
 - libdbus-1-dev (ubuntu/debian)
 - dbus-devel (fedora)
 
-### x86_64-unknown-linux-gnu
-
-Additionally for this platform, to improved compilation times:
-
-- clang-16
-- mold
-
 See `.cargo/config.toml` for how they are configured.
 
 ## Installation