diff --git a/pkgs/by-name/pa/pagsuite/package.nix b/pkgs/by-name/pa/pagsuite/package.nix
index 6994712e18fd..850732275cb3 100644
--- a/pkgs/by-name/pa/pagsuite/package.nix
+++ b/pkgs/by-name/pa/pagsuite/package.nix
@@ -1,10 +1,12 @@
-{ lib
-, stdenv
-, fetchurl
-, cmake
-, unzip
-, gmp
-, scalp
+{
+  lib,
+  stdenv,
+  fetchurl,
+  fetchpatch,
+  cmake,
+  unzip,
+  gmp,
+  scalp,
 }:
 
 stdenv.mkDerivation rec {
@@ -12,11 +14,21 @@ stdenv.mkDerivation rec {
   version = "1.80";
 
   src = fetchurl {
-    url = "https://gitlab.com/kumm/pagsuite/-/raw/master/releases/pagsuite_${lib.replaceStrings ["."] ["_"] version}.zip";
+    url = "https://gitlab.com/kumm/pagsuite/-/raw/master/releases/pagsuite_${
+      lib.replaceStrings [ "." ] [ "_" ] version
+    }.zip";
     hash = "sha256-TYd+dleVPWEWU9Cb3XExd7ixJZyiUAp9QLtorYJSIbQ=";
   };
 
-  sourceRoot = "pagsuite_${lib.replaceStrings ["."] ["_"] version}";
+  patches = [
+    # Fix issue with latest ScaLP update
+    (fetchpatch {
+      url = "https://gitlab.com/kumm/pagsuite/-/commit/cae9f78bec93a7f197461358f2f796f6b5778781.patch";
+      hash = "sha256-12IisS6oGYLRicORTemHB7bw9EB9cuQjxG8f6X0WMrU=";
+    })
+  ];
+
+  sourceRoot = "pagsuite_${lib.replaceStrings [ "." ] [ "_" ] version}";
 
   nativeBuildInputs = [
     cmake
diff --git a/pkgs/by-name/sc/scalp/package.nix b/pkgs/by-name/sc/scalp/package.nix
index a4d3dc52e0a9..fcd0ce58c24f 100644
--- a/pkgs/by-name/sc/scalp/package.nix
+++ b/pkgs/by-name/sc/scalp/package.nix
@@ -1,59 +1,80 @@
-{ lib
-, stdenv
-, fetchgit
-, cmake
-, withGurobi ? false
-, gurobi
-, withCplex ? false
-, cplex
-, withLpsolve ? true
-, lp_solve
+{
+  lib,
+  stdenv,
+  fetchgit,
+  cmake,
+  withGurobi ? false,
+  gurobi,
+  withCplex ? false,
+  cplex,
+  withLpsolve ? true,
+  lp_solve,
+  unstableGitUpdater,
 }:
 
 stdenv.mkDerivation rec {
   pname = "scalp";
-  version = "unstable-2022-03-15";
+  version = "0-unstable-2024-08-28";
 
   src = fetchgit {
     url = "https://digidev.digi.e-technik.uni-kassel.de/git/scalp.git";
     # mirrored at https://git.sr.ht/~weijia/scalp
-    rev = "185b84e4ff967f42cf2de5db4db4e6fa0cc18fb8";
-    hash = "sha256-NyMZdJwdD3FR6uweYCclJjfcf3Y24Bns1ViwsmJ5izg=";
+    rev = "4a8e8b850a57328d9377ea7955c27c437394ebd3";
+    hash = "sha256-6OEf3yWFBmTKgeTMojRMRf/t9Ec1i851Lx3mQjCeOuw=";
   };
 
+  postPatch =
+    ''
+      substituteInPlace CMakeLists.txt \
+        --replace-fail "\''$ORIGIN" "\''${CMAKE_INSTALL_PREFIX}/lib" \
+        --replace-fail "-m64" ""
+      substituteInPlace src/tests/CMakeLists.txt \
+        --replace-fail "src/tests/" ""
+    ''
+    + lib.optionalString withGurobi ''
+      substituteInPlace CMakeExtensions/FindGurobi.cmake \
+        --replace-fail "\''${GUROBI_VERSION}" '"${lib.versions.major gurobi.version}${lib.versions.minor gurobi.version}"'
+    '';
+
   nativeBuildInputs = [
     cmake
   ];
 
-  buildInputs = lib.optionals withGurobi [
-    gurobi
-  ] ++ lib.optionals withCplex [
-    cplex
-  ] ++ lib.optionals withLpsolve [
-    lp_solve
-  ];
+  buildInputs =
+    lib.optionals withGurobi [
+      gurobi
+    ]
+    ++ lib.optionals withCplex [
+      cplex
+    ]
+    ++ lib.optionals withLpsolve [
+      lp_solve
+    ];
 
-  postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
-    substituteInPlace CMakeLists.txt \
-      --replace "\''$ORIGIN" "\''${CMAKE_INSTALL_PREFIX}/lib"
-  '';
-
-  cmakeFlags = [
-    "-DBUILD_TESTS=${lib.boolToString doCheck}"
-  ] ++ lib.optionals withGurobi [
-    "-DGUROBI_DIR=${gurobi}"
-  ] ++ lib.optionals withCplex [
-    "-DCPLEX_DIR=${cplex}"
-  ];
+  cmakeFlags =
+    [
+      (lib.cmakeBool "BUILD_TESTS" doCheck)
+    ]
+    ++ lib.optionals withGurobi [
+      (lib.cmakeFeature "GUROBI_ROOT_DIR" "${gurobi}")
+    ]
+    ++ lib.optionals withCplex [
+      (lib.cmakeFeature "CPLEX_ROOT_DIR" "${cplex}")
+    ]
+    ++ lib.optionals withLpsolve [
+      (lib.cmakeFeature "LPSOLVE_ROOT_DIR" "${lp_solve}")
+    ];
 
   doCheck = true;
 
-  meta = with lib; {
+  passthru.updateScript = unstableGitUpdater { };
+
+  meta = {
     description = "Scalable Linear Programming Library";
     mainProgram = "scalp";
     homepage = "https://digidev.digi.e-technik.uni-kassel.de/scalp/";
-    license = licenses.lgpl3;
-    platforms = platforms.unix;
-    maintainers = with maintainers; [ wegank ];
+    license = lib.licenses.lgpl3Only;
+    platforms = lib.platforms.unix;
+    maintainers = with lib.maintainers; [ wegank ];
   };
 }