%global _build_id_links none
%global debug_package %{nil}
%global __strip /usr/bin/true

# Passed in via --define at rpmbuild time
%{!?mistralrs_version: %global mistralrs_version 0.7.0}
%{!?mistralrs_flavour: %global mistralrs_flavour cuda13}

Name:           mistralrs-server-%{mistralrs_flavour}
Version:        %{mistralrs_version}
Release:        1%{?dist}
Summary:        Fast, flexible LLM inference server (mistral.rs, %{mistralrs_flavour} flavour)

License:        MIT
URL:            https://github.com/EricLBuehler/mistral.rs

# Pre-built binary (produced in the build job, not rebuilt here)
Source0:        mistralrs-server-%{mistralrs_flavour}
Source1:        mistralrs@.service
Source2:        mistralrs@.conf.example

ExclusiveArch:  x86_64

# Suppress auto-detected CUDA library dependencies. The binary links against
# the CUDA runtime, cuDNN, NCCL, etc. but we don't want rpm to pin exact
# soname versions — consumers may have CUDA from multiple sources (nvidia
# direct, rpmfusion, etc.) and different compatible versions. A runtime
# dlopen failure gives a clearer error than rpm dep resolution would.
%global __requires_exclude ^lib(cuda|cudart|cudnn|cublas|cublasLt|curand|nvrtc|nccl)
Requires:       systemd

# Flavours are mutually exclusive with other flavours of themselves at the
# same install path, but you can install cuda13, cuda13-fa, cuda13-fa-nccl
# side by side — they all get separate /opt paths.
Provides:       mistralrs-server = %{version}-%{release}

%description
mistral.rs is a blazingly fast LLM inference engine written in Rust.
This package provides the %{mistralrs_flavour} flavour, built with features:
cuda, cudnn, and optionally flash-attn and nccl depending on flavour name.

Binary installs to /opt/mistralrs/%{mistralrs_flavour}/bin/ and can coexist
with other flavours. Use `update-alternatives --config mistralrs-server` to
select the default /usr/bin/mistralrs-server symlink target.

%prep
# Nothing to unpack; Source0 is the binary itself
cp %{SOURCE0} .
cp %{SOURCE1} .
cp %{SOURCE2} .

%build
# Already built

%install
install -D -m 0755 mistralrs-server-%{mistralrs_flavour} \
    %{buildroot}/opt/mistralrs/%{mistralrs_flavour}/bin/mistralrs-server
install -D -m 0644 mistralrs@.service \
    %{buildroot}%{_unitdir}/mistralrs-%{mistralrs_flavour}@.service
install -D -m 0644 mistralrs@.conf.example \
    %{buildroot}%{_sysconfdir}/mistralrs/%{mistralrs_flavour}.conf.example

# Patch the unit to point at this flavour's binary
sed -i "s|@BINARY@|/opt/mistralrs/%{mistralrs_flavour}/bin/mistralrs-server|g" \
    %{buildroot}%{_unitdir}/mistralrs-%{mistralrs_flavour}@.service
sed -i "s|@FLAVOUR@|%{mistralrs_flavour}|g" \
    %{buildroot}%{_unitdir}/mistralrs-%{mistralrs_flavour}@.service

%post
# Register this flavour as an alternative for /usr/bin/mistralrs-server.
# Priority = 10 for cuda13, 20 for cuda13-fa, 30 for cuda13-fa-nccl so that
# "more featureful" wins by default. Consumers can override with
# `update-alternatives --config mistralrs-server`.
priority=10
case "%{mistralrs_flavour}" in
    *nccl*) priority=30 ;;
    *fa*)   priority=20 ;;
esac
update-alternatives --install /usr/bin/mistralrs-server mistralrs-server \
    /opt/mistralrs/%{mistralrs_flavour}/bin/mistralrs-server "${priority}"

%systemd_post mistralrs-%{mistralrs_flavour}@.service

%preun
%systemd_preun mistralrs-%{mistralrs_flavour}@.service

%postun
if [ $1 -eq 0 ]; then
    update-alternatives --remove mistralrs-server \
        /opt/mistralrs/%{mistralrs_flavour}/bin/mistralrs-server
fi
%systemd_postun_with_restart mistralrs-%{mistralrs_flavour}@.service

%files
/opt/mistralrs/%{mistralrs_flavour}/
%{_unitdir}/mistralrs-%{mistralrs_flavour}@.service
%{_sysconfdir}/mistralrs/%{mistralrs_flavour}.conf.example

%changelog
* Thu Apr 23 2026 Robin Thijssen <grenade@lair.cafe> - %{mistralrs_version}-1
- Automated build for %{mistralrs_flavour} flavour