Use deriving_inline construct in backends to reduce build dependencies - #95

✅ (analysis) (passed)
✅ (lint-doc) (passed)
✅ (lint-fmt) (passed)
❌ EXPERIMENTAL: (lint-opam) (failure: Failed: Build failed)
✅ (lower-bound) (passed)
✅ alpine-3.21-4.14_opam-2.4 (passed)
✅ alpine-3.21-5.3_opam-2.4 (passed)
✅ debian-11-4.14_opam-2.4 (passed)
✅ debian-11-5.3_opam-2.4 (passed)
✅ debian-12-4.14+flambda_opam-2.4 (passed)
✅ debian-12-4.14_arm32_opam-2.4 (passed)
✅ debian-12-4.14_arm64_opam-2.4 (passed)
✅ debian-12-4.14_opam-2.4 (passed)
✅ debian-12-4.14_ppc64_opam-2.4 (passed)
✅ debian-12-4.14_s390x_opam-2.4 (passed)
✅ debian-12-4.14_x86_32_opam-2.4 (passed)
✅ debian-12-5.0_opam-2.4 (passed)
✅ debian-12-5.1_opam-2.4 (passed)
✅ debian-12-5.2_opam-2.4 (passed)
✅ debian-12-5.3+flambda_opam-2.4 (passed)
✅ debian-12-5.3_arm64_opam-2.4 (passed)
✅ debian-12-5.3_opam-2.4 (passed)
✅ debian-12-5.3_ppc64_opam-2.4 (passed)
🟠 debian-12-5.3_s390x_opam-2.4 (active)
✅ fedora-41-4.14_opam-2.4 (passed)
✅ fedora-41-5.3_opam-2.4 (passed)
✅ fedora-42-4.14_opam-2.4 (passed)
✅ fedora-42-5.3_opam-2.4 (passed)
✅ macos-homebrew-4.14_arm64_opam-2.4 (passed)
✅ macos-homebrew-4.14_opam-2.4 (passed)
✅ macos-homebrew-5.3_arm64_opam-2.4 (passed)
🟠 macos-homebrew-5.3_opam-2.4 (active)
🟠 openbsd-77-amd64-4.14_opam-2.4 (active)
🟠 openbsd-77-amd64-5.3_opam-2.4 (active)
✅ opensuse-15.6-4.14_opam-2.4 (passed)
✅ opensuse-15.6-5.3_opam-2.4 (passed)
✅ ubuntu-22.04-4.14_opam-2.4 (passed)
✅ ubuntu-22.04-5.3_opam-2.4 (passed)
✅ ubuntu-24.04-4.14_opam-2.4 (passed)
✅ ubuntu-24.04-5.3_opam-2.4 (passed)
✅ ubuntu-24.10-4.14_opam-2.4 (passed)
✅ ubuntu-24.10-5.3_opam-2.4 (passed)
✅ ubuntu-25.04-4.14_opam-2.4 (passed)
✅ ubuntu-25.04-5.3_opam-2.4 (passed)
🟠 windows-server-2022-amd64-4.14_opam-2.4 (active)
🟠 windows-server-2022-amd64-5.3_opam-2.4 (active)