Provide nixpkgs.lib in bscpkgs outputs

Currently, we can use bscpkgs similarly to nixpkgs either through
the flake outputs or with import bscpkgs:

```nix
# currently supported:
bscpkgs.legacyPackages.x86_64-linux.hello
let pkgs = import bscpkgs { system = "x86_64-linux"; }; in pkgs.hello
```
The missing piece is nixpkgs.lib (not pkgs.lib, the system agnostic
one). The workaround is to do bscpkgs.inputs.nixpkgs.lib instead. We can
simplify this by forwarding the lib to our outputs.

This enables us to use bscpkgs as a drop-in
replacing the inputs to our flake from nixpkgs to bscpkgs.
(inputs.nixpkgs.url = "<*BSC*pkgs url>").


Reviewed-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>

.gitea/workflows/ci.yaml

@@ -1,15 +0,0 @@
-name: CI
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
-
-jobs:
-  build:all:
-    runs-on: native
-    steps:
-      - uses: https://gitea.com/ScMi1/checkout@v1.4
-      - run: nix build -L --no-link --print-out-paths .#bsc-ci.all

flake.nix

@@ -2,23 +2,17 @@
   inputs.nixpkgs.url = "nixpkgs";
 
   outputs = { self, nixpkgs, ...}:
-    let
+  let
+    pkgs = import nixpkgs {
       # For now we only support x86
       system = "x86_64-linux";
-      pkgs = import nixpkgs {
+      overlays = [ self.overlays.default ];
-        inherit system;
+    };
-        overlays = [ self.overlays.default ];
+  in
-      };
-    in
     {
       bscOverlay = import ./overlay.nix;
       overlays.default = self.bscOverlay;
-      # full nixpkgs with our overlay applied
+      legacyPackages.x86_64-linux = pkgs;
-      legacyPackages.${system} = pkgs;
-
-      hydraJobs = {
-        inherit (self.legacyPackages.${system}.bsc-ci) tests pkgs cross;
-      };
 
       # propagate nixpkgs lib, so we can do bscpkgs.lib
       inherit (nixpkgs) lib;

overlay.nix

@@ -6,6 +6,9 @@ with final.lib;
 let
   callPackage = final.callPackage;
 
+  mkDeps = name: pkgs: final.runCommand name { }
+    "printf '%s\n' ${toString (collect (x: x ? outPath) pkgs)} > $out";
+
   bscPkgs = {
     bench6 = callPackage ./pkgs/bench6/default.nix { };
     bigotes = callPackage ./pkgs/bigotes/default.nix { };
@@ -15,7 +18,7 @@ let
     clangOmpss2NodesOmpv = callPackage ./pkgs/llvm-ompss2/default.nix { ompss2rt = final.nodes; openmp = final.openmpv; };
     clangOmpss2Unwrapped = callPackage ./pkgs/llvm-ompss2/clang.nix { };
     #extrae = callPackage ./pkgs/extrae/default.nix { }; # Broken and outdated
-    gpi-2 = callPackage ./pkgs/gpi-2/default.nix { };
+    #gpi-2 = callPackage ./pkgs/gpi-2/default.nix { }; # Broken: https://jungle.bsc.es/git/rarias/bscpkgs/issues/7
     intelPackages_2023 = callPackage ./pkgs/intel-oneapi/2023.nix { };
     jemallocNanos6 = callPackage ./pkgs/nanos6/jemalloc.nix { };
     lmbench = callPackage ./pkgs/lmbench/default.nix { };
@@ -41,79 +44,61 @@ let
     stdenvClangOmpss2Nanos6 = final.stdenv.override { cc = final.clangOmpss2Nanos6; allowedRequisites = null; };
     stdenvClangOmpss2Nodes = final.stdenv.override { cc = final.clangOmpss2Nodes; allowedRequisites = null; };
     stdenvClangOmpss2NodesOmpv = final.stdenv.override { cc = final.clangOmpss2NodesOmpv; allowedRequisites = null; };
-    tagaspi = callPackage ./pkgs/tagaspi/default.nix { };
+    #tagaspi = callPackage ./pkgs/tagaspi/default.nix { }; # Broken due gpi-2
     tampi = callPackage ./pkgs/tampi/default.nix { };
     wxparaver = callPackage ./pkgs/paraver/default.nix { };
   };
 
-  tests = rec {
-    #hwloc = callPackage ./test/bugs/hwloc.nix { }; # Broken, no /sys
-    #sigsegv = callPackage ./test/reproducers/sigsegv.nix { };
-    hello-c = callPackage ./test/compilers/hello-c.nix { };
-    hello-cpp = callPackage ./test/compilers/hello-cpp.nix { };
-    lto = callPackage ./test/compilers/lto.nix { };
-    asan = callPackage ./test/compilers/asan.nix { };
-    intel2023-icx-c   = hello-c.override   { stdenv = final.intelPackages_2023.stdenv; };
-    intel2023-icc-c   = hello-c.override   { stdenv = final.intelPackages_2023.stdenv-icc; };
-    intel2023-icx-cpp = hello-cpp.override { stdenv = final.intelPackages_2023.stdenv; };
-    intel2023-icc-cpp = hello-cpp.override { stdenv = final.intelPackages_2023.stdenv-icc; };
-    intel2023-ifort   = callPackage ./test/compilers/hello-f.nix {
-      stdenv = final.intelPackages_2023.stdenv-ifort;
-    };
-    clangOmpss2-lto   = lto.override       { stdenv = final.stdenvClangOmpss2Nanos6; };
-    clangOmpss2-asan  = asan.override      { stdenv = final.stdenvClangOmpss2Nanos6; };
-    clangOmpss2-task  = callPackage ./test/compilers/ompss2.nix {
-      stdenv = final.stdenvClangOmpss2Nanos6;
-    };
-    clangNodes-task = callPackage ./test/compilers/ompss2.nix {
-      stdenv = final.stdenvClangOmpss2Nodes;
-    };
-    clangNosvOpenmp-task = callPackage ./test/compilers/clang-openmp.nix {
-      stdenv = final.stdenvClangOmpss2Nodes;
-    };
-    clangNosvOmpv-nosv = callPackage ./test/compilers/clang-openmp-nosv.nix {
-      stdenv = final.stdenvClangOmpss2NodesOmpv;
-    };
-    clangNosvOmpv-ld = callPackage ./test/compilers/clang-openmp-ld.nix {
-      stdenv = final.stdenvClangOmpss2NodesOmpv;
-    };
-  };
-
-  pkgs = filterAttrs (_: isDerivation) bscPkgs;
-
-  crossTargets = [ "riscv64" ];
-  cross = prev.lib.genAttrs crossTargets (target:
-    final.pkgsCross.${target}.bsc-ci.pkgs
-  );
-
-  buildList = name: paths:
-    final.runCommandLocal name { } ''
-      printf '%s\n' ${toString paths} | tee $out
-    '';
-
-  buildList' = name: paths:
-    final.runCommandLocal name { } ''
-      deps="${toString paths}"
-      cat $deps
-      printf '%s\n' $deps >$out
-    '';
-
-  crossList = builtins.mapAttrs (t: v: buildList t (builtins.attrValues v)) cross;
-
-  pkgsList = buildList "ci-pkgs" (builtins.attrValues pkgs);
-  testList = buildList "ci-tests" (collect isDerivation tests);
-
-  all = buildList' "ci-all" [ pkgsList testList ];
-
 in bscPkgs // {
   # Prevent accidental usage of bsc attribute
   bsc = throw "the bsc attribute is deprecated, packages are now in the root";
 
   # Internal for our CI tests
   bsc-ci = {
-    inherit pkgs pkgsList;
+    test = rec {
-    inherit tests testList;
+      #hwloc = callPackage ./test/bugs/hwloc.nix { }; # Broken, no /sys
-    inherit cross crossList;
+      #sigsegv = callPackage ./test/reproducers/sigsegv.nix { };
-    inherit all;
+      hello-c = callPackage ./test/compilers/hello-c.nix { };
+      hello-cpp = callPackage ./test/compilers/hello-cpp.nix { };
+      lto = callPackage ./test/compilers/lto.nix { };
+      asan = callPackage ./test/compilers/asan.nix { };
+      intel2023-icx-c   = hello-c.override   { stdenv = final.intelPackages_2023.stdenv; };
+      intel2023-icc-c   = hello-c.override   { stdenv = final.intelPackages_2023.stdenv-icc; };
+      intel2023-icx-cpp = hello-cpp.override { stdenv = final.intelPackages_2023.stdenv; };
+      intel2023-icc-cpp = hello-cpp.override { stdenv = final.intelPackages_2023.stdenv-icc; };
+      intel2023-ifort   = callPackage ./test/compilers/hello-f.nix {
+        stdenv = final.intelPackages_2023.stdenv-ifort;
+      };
+      clangOmpss2-lto   = lto.override       { stdenv = final.stdenvClangOmpss2Nanos6; };
+      clangOmpss2-asan  = asan.override      { stdenv = final.stdenvClangOmpss2Nanos6; };
+      clangOmpss2-task  = callPackage ./test/compilers/ompss2.nix {
+        stdenv = final.stdenvClangOmpss2Nanos6;
+      };
+      clangNodes-task = callPackage ./test/compilers/ompss2.nix {
+        stdenv = final.stdenvClangOmpss2Nodes;
+      };
+      clangNosvOpenmp-task = callPackage ./test/compilers/clang-openmp.nix {
+        stdenv = final.stdenvClangOmpss2Nodes;
+      };
+      clangNosvOmpv-nosv = callPackage ./test/compilers/clang-openmp-nosv.nix {
+        stdenv = final.stdenvClangOmpss2NodesOmpv;
+      };
+      clangNosvOmpv-ld = callPackage ./test/compilers/clang-openmp-ld.nix {
+        stdenv = final.stdenvClangOmpss2NodesOmpv;
+      };
+    };
+
+    pkgs = final.runCommand "ci-pkgs" { }
+      "printf '%s\n' ${toString (collect isDerivation bscPkgs)} > $out";
+
+    tests = final.runCommand "ci-tests" { }
+      "printf '%s\n' ${toString (collect isDerivation final.bsc-ci.test)} > $out";
+
+    all = final.runCommand "ci-all" { }
+    ''
+      deps="${toString [ final.bsc-ci.pkgs final.bsc-ci.tests ]}"
+      cat $deps
+      printf '%s\n' $deps > $out
+    '';
   };
 }

pkgs/bench6/default.nix

@@ -27,13 +27,10 @@ stdenv.mkDerivation rec {
     rev = gitCommit;
   };
 
-  nativeBuildInputs = [
-    cmake
-    clangOmpss2
-  ];
-
   buildInputs = [
     bigotes
+    cmake
+    clangOmpss2
     openmp
     openmpv
     nanos6

pkgs/bigotes/default.nix

@@ -4,7 +4,7 @@
 , cmake
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "bigotes";
   version = "9dce13";
   src = fetchFromGitHub {
@@ -13,5 +13,5 @@ stdenv.mkDerivation {
     rev = "9dce13446a8da30bea552d569d260d54e0188518";
     sha256 = "sha256-ktxM3pXiL8YXSK+/IKWYadijhYXqGoLY6adLk36iigE=";
   };
-  nativeBuildInputs = [ cmake ];
+  buildInputs = [ cmake ];
 }

pkgs/gpi-2/default.nix

@@ -34,8 +34,6 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  patches = [ ./rdma-core.patch ./max-mem.patch ];
-
   preConfigure = ''
     patchShebangs autogen.sh
     ./autogen.sh

pkgs/gpi-2/max-mem.patch

@@ -1,10 +0,0 @@
---- a/tests/tests/segments/max_mem.c	2025-09-12 13:30:53.449353591 +0200
-+++ b/tests/tests/segments/max_mem.c	2025-09-12 13:33:49.750352401 +0200
-@@ -1,5 +1,7 @@
- #include <test_utils.h>
- 
-+gaspi_size_t gaspi_get_system_mem (void);
-+
- /* Test allocates 45% of system memory and creates a segment that
-    large or if several ranks per node exist, divided among that
-    number */

pkgs/gpi-2/rdma-core.patch

@@ -1,12 +0,0 @@
---- a/src/devices/ib/GPI2_IB.h	2025-09-12 13:25:31.564181121 +0200
-+++ b/src/devices/ib/GPI2_IB.h	2025-09-12 13:24:49.105422150 +0200
-@@ -26,6 +26,9 @@ along with GPI-2. If not, see <http://ww
- 
- #include "GPI2_Dev.h"
- 
-+/* Missing prototype as driver.h is now private */
-+int ibv_read_sysfs_file(const char *dir, const char *file, char *buf, size_t size);
-+
- #define GASPI_GID_INDEX   (0)
- #define PORT_LINK_UP      (5)
- #define MAX_INLINE_BYTES  (128)

pkgs/intel-oneapi/2023.nix

@@ -78,7 +78,7 @@ let
   uncompressDebs = debs: name: stdenv.mkDerivation {
     name = name;
     srcs = debs;
-    nativeBuildInputs = [ dpkg ];
+    buildInputs = [ dpkg ];
     phases = [ "installPhase" ];
     installPhase = ''
       mkdir -p $out
@@ -108,17 +108,14 @@ let
       "intel-oneapi-mpi-${version}"
     ];
 
-    nativeBuildInputs = [
-      autoPatchelfHook
-      rsync
-    ];
-
     buildInputs = [
+      rsync
       libfabric
       zlib
       stdenv.cc.cc.lib
     ];
 
+    nativeBuildInputs = [ autoPatchelfHook ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
     installPhase = ''
@@ -157,6 +154,7 @@ let
 
     buildInputs = [
       intel-mpi
+      rsync
       libffi_3_3
       libelf
       libxml2
@@ -164,10 +162,7 @@ let
       stdenv.cc.cc.lib
     ];
 
-    nativeBuildInputs = [
+    nativeBuildInputs = [ autoPatchelfHook ];
-      autoPatchelfHook
-      rsync
-    ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
 
@@ -197,6 +192,7 @@ let
     buildInputs = [
       intel-mpi
       intel-tbb
+      rsync
       libffi_3_3
       libelf
       libxml2
@@ -205,10 +201,7 @@ let
       stdenv.cc.cc.lib
     ];
 
-    nativeBuildInputs = [
+    nativeBuildInputs = [ autoPatchelfHook ];
-      autoPatchelfHook
-      rsync
-    ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
 
@@ -261,6 +254,7 @@ let
     buildInputs = [
       intel-mpi
       intel-compiler-shared
+      rsync
       libffi_3_3
       libelf
       libxml2
@@ -268,10 +262,7 @@ let
       stdenv.cc.cc.lib
     ];
 
-    nativeBuildInputs = [
+    nativeBuildInputs = [ autoPatchelfHook ];
-      autoPatchelfHook
-      rsync
-    ];
 
     phases = [ "installPhase" "fixupPhase" ];
 
@@ -346,6 +337,7 @@ let
 
     buildInputs = [
       intel-compiler-shared
+      rsync
       libffi_3_3
       libelf
       libxml2
@@ -353,10 +345,7 @@ let
       stdenv.cc.cc.lib
     ];
 
-    nativeBuildInputs = [
+    nativeBuildInputs = [ autoPatchelfHook ];
-      autoPatchelfHook
-      rsync
-    ];
     autoPatchelfIgnoreMissingDeps = [ "libtbb.so.12" "libtbbmalloc.so.2" "libze_loader.so.1" ];
 
     phases = [ "installPhase" "fixupPhase" ];

pkgs/llvm-ompss2/clang.nix

@@ -43,36 +43,32 @@ let
 
   source = if (useGit) then git else release;
 
-in stdenv.mkDerivation {
+in stdenv.mkDerivation rec {
   pname = "clang-ompss2";
   inherit (source) src version;
 
   enableParallelBuilding = true;
+  isClang = true;
 
   passthru = {
     CC = "clang";
     CXX = "clang++";
-
-    isClang = true;
-    isClangWithOmpss = true;
-
-    inherit gcc zlib;
   };
 
-  nativeBuildInputs = [
+  isClangWithOmpss = true;
-    bash
+
-    cmake
+  nativeBuildInputs = [ zlib ];
-    elfutils
-    llvmPackages_latest.lld
-    pkg-config
-    python3
-    perl
-    which
-    zlib
-  ];
 
   buildInputs = [
+    which
+    bash
+    python3
+    perl
+    cmake
+    llvmPackages_latest.lld
+    elfutils
     libffi
+    pkg-config
     zlib
     gcc.cc.lib # Required for libstdc++.so.6
   ];

pkgs/mcxx/default.nix

@@ -32,20 +32,17 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  nativeBuildInputs = [
+  buildInputs = [
     autoreconfHook
-    bison
+    nanos6
-    flex
+    gperf
     python3
     gfortran
     pkg-config
-    gperf
-    gcc
-  ];
-
-  buildInputs = [
-    nanos6
     sqlite.dev
+    bison
+    flex
+    gcc
   ];
 
   patches = [ ./intel.patch ];

pkgs/nanos6/default.nix

@@ -88,19 +88,11 @@ in
     dontStrip = enableDebug;
     separateDebugInfo = true;
 
-    nativeBuildInputs = [
+    buildInputs = [
       autoconf
       automake
       libtool
       pkg-config
-
-      # TODO: papi_version is needed for configure:
-      # ./configure: line 27378: papi_version: command not found
-      # This probably breaks cross-compilation
-      papi
-    ];
-
-    buildInputs = [
       boost
       numactl
       hwloc
@@ -112,7 +104,7 @@ in
     postInstall = ''
       mkdir -p $out/nix-support
       echo "export NANOS6_HOME=$out" >> $out/nix-support/setup-hook
-    '';
+    ''; 
 
     meta = with lib; {
       homepage = "https://github.com/bsc-pm/nanos6";

pkgs/osu/default.nix

@@ -24,10 +24,9 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   enableParallelBuilding = true;
-  nativeBuildInputs = [ mpiAll ];
   buildInputs = [ mpiAll ];
   hardeningDisable = [ "all" ];
-  configureFlags = [
+  configureFlags = [ 
       "CC=mpicc"
       "CXX=mpicxx"
   ];
@@ -41,7 +40,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "OSU Micro-Benchmarks";
-    homepage = "http://mvapich.cse.ohio-state.edu/benchmarks/";
+    homepage = http://mvapich.cse.ohio-state.edu/benchmarks/;
     maintainers = [ ];
     platforms = lib.platforms.all;
   };

pkgs/ovni/default.nix

@@ -13,6 +13,8 @@
 , useMpi ? (stdenv.buildPlatform.canExecute stdenv.hostPlatform)
 }:
 
+with lib;
+
 let
   release = rec {
     version = "1.12.0";
@@ -43,7 +45,7 @@ in
     postPatch = ''
       patchShebangs --build test/
     '';
-    nativeBuildInputs = [ cmake ] ++ lib.optionals (useMpi) [ mpi ];
+    nativeBuildInputs = [ cmake ];
     buildInputs = lib.optionals (useMpi) [ mpi ];
     cmakeBuildType = if (enableDebug) then "Debug" else "Release";
     cmakeFlags = [

pkgs/paraver/default.nix

@@ -60,17 +60,17 @@ stdenv.mkDerivation rec {
   ];
 
   nativeBuildInputs = [
-    autoconf
-    automake
-    autoreconfHook
     wrapGAppsHook
   ];
 
   buildInputs = [
+    autoreconfHook
     boost
     libxml2.dev
     xml2
     wx
+    autoconf
+    automake
     paraverKernel
     openssl.dev
   ];

pkgs/paraver/kernel.nix

@@ -44,17 +44,14 @@ stdenv.mkDerivation rec {
     "--enable-openmp"
   ];
 
-  nativeBuildInputs = [
-    autoreconfHook
-    autoconf
-    automake
-    pkg-config
-  ];
-
   buildInputs = [
+    autoreconfHook
     boost
     libxml2.dev
     xml2
+    autoconf
+    automake
+    pkg-config
     zlib
   ];
 }

pkgs/paraver/release.nix

@@ -61,16 +61,13 @@ stdenv.mkDerivation rec {
     "--with-wx-config=${wx}/bin/wx-config"
   ];
 
-  nativeBuildInputs = [
-    autoconf
-    automake
-  ];
-
   buildInputs = [
     boost
     xml2
     libxml2.dev
     wx
+    autoconf
+    automake
     openssl.dev
   ];
 

pkgs/sonar/default.nix

@@ -18,12 +18,8 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "all" ];
   dontStrip = true;
   configureFlags = [ "--with-ovni=${ovni}" ];
-
-  nativeBuildInputs = [
-    autoreconfHook
-  ];
-
   buildInputs = [
+    autoreconfHook
     ovni
     mpi
   ];

pkgs/tampi/default.nix

@@ -8,6 +8,7 @@
 , gnumake
 , boost
 , mpi
+, gcc
 , autoreconfHook
 , enableOvni ? true
 , ovni ? null
@@ -40,23 +41,20 @@ let
     };
   };
   source = if (useGit) then git else release;
-in stdenv.mkDerivation {
+in stdenv.mkDerivation rec {
   pname = "tampi";
   inherit (source) src version;
   enableParallelBuilding = true;
   separateDebugInfo = true;
-
-  nativeBuildInputs = [
-    autoconf
-    automake
-    autoreconfHook
-    gnumake
-    libtool
-  ];
-
   buildInputs = [
+    autoreconfHook
+    automake
+    autoconf
+    libtool
+    gnumake
     boost
     mpi
+    gcc
   ] ++ optional (enableOvni) ovni;
   configureFlags = optional (enableOvni) "--with-ovni=${ovni}";
   dontDisableStatic = true;