From af955ca3451475608e1af6d01af92ccbdb6f8162 Mon Sep 17 00:00:00 2001
From: "Vincent A. Arcila" <vincent.arcila@bsc.es>
Date: Fri, 26 Sep 2025 11:56:59 +0200
Subject: [PATCH] Add blis package

---
 pkgs/blis/default.nix | 65 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 pkgs/blis/default.nix

diff --git a/pkgs/blis/default.nix b/pkgs/blis/default.nix
new file mode 100644
index 0000000..2a481bd
--- /dev/null
+++ b/pkgs/blis/default.nix
@@ -0,0 +1,65 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  perl,
+  python3,
+
+  # Enable BLAS interface with 64-bit integer width.
+  blasIntSize ? "64",
+
+  # Target architecture. x86_64 builds Intel and AMD kernels.
+  withArchitecture ? "x86_64",
+
+  # Enable OpenMP-based threading.
+  withOpenMP ? true,
+
+  # TODO: Use tag of last release insted of commit
+  gitUrl ? "https://github.com/amd/blis.git",
+  gitBranch ?  "master",
+  gitCommit ? "16f852a065e76e824d77bc39e2baa82ac19ed419"
+}:
+
+assert lib.assertOneOf "blasIntSize" blasIntSize ["32" "64"];
+let
+  git = rec {
+    version = src.shortRev;
+    src = builtins.fetchGit {
+      url = gitUrl;
+      ref = gitBranch;
+      rev = gitCommit;
+    };
+  };
+in
+  stdenv.mkDerivation rec {
+    pname = "blis";
+    inherit (git) src version;
+
+    nativeBuildInputs = [
+      perl
+      python3
+    ];
+
+    doCheck = false;
+
+    enableParallelBuilding = true;
+
+    configureFlags = [
+      "--enable-cblas"
+      "--blas-int-size=${blasIntSize}"
+      ]
+      ++ lib.optionals withOpenMP [ "--enable-threading=openmp" ]
+      ++ [ "auto" ];
+
+    postPatch = ''
+      patchShebangs configure build/flatten-headers.py
+    '';
+
+    postInstall = ''
+      ln -s $out/lib/libblis.so.4 $out/lib/libblas.so.3
+      ln -s $out/lib/libblis.so.4 $out/lib/libcblas.so.3
+      ln -s $out/lib/libblas.so.3 $out/lib/libblas.so
+      ln -s $out/lib/libcblas.so.3 $out/lib/libcblas.so
+    '';
+  }
+