diff --git a/pkgs/applications/science/math/sage/sage-tests.nix b/pkgs/applications/science/math/sage/sage-tests.nix
index 591fa192d563..3e3c32b2c8da 100644
--- a/pkgs/applications/science/math/sage/sage-tests.nix
+++ b/pkgs/applications/science/math/sage/sage-tests.nix
@@ -3,7 +3,7 @@
 , sage-with-env
 , makeWrapper
 , files ? null # "null" means run all tests
-, longTests ? true # run tests marked as "long time" (roughly doubles runtime)
+, longTests ? false # run tests marked as "long time" (roughly doubles runtime)
 # Run as many tests as possible in approximately n seconds. This will give each
 # file to test a "time budget" and stop tests if it is exceeded. 300 is the
 # upstream default value.
diff --git a/pkgs/development/libraries/science/math/sympow/default.nix b/pkgs/development/libraries/science/math/sympow/default.nix
index 080cab86ca4b..fd9285ebf790 100644
--- a/pkgs/development/libraries/science/math/sympow/default.nix
+++ b/pkgs/development/libraries/science/math/sympow/default.nix
@@ -1,89 +1,74 @@
 { stdenv
-, fetchurl
-, fetchpatch
+, fetchFromGitLab
 , makeWrapper
+, which
+, autoconf
+, help2man
+, file
+, pari
 }:
 
 stdenv.mkDerivation rec {
-  version = "1.018.1";
+  version = "2.023.4";
   name = "sympow-${version}";
 
-  src = fetchurl {
-    # Original website no longer reachable
-    url = "mirror://sageupstream/sympow/sympow-${version}.tar.bz2";
-    sha256 = "0hphs7ia1wr5mydf288zvwj4svrymfpadcg3pi6w80km2yg5bm3c";
+  src = fetchFromGitLab {
+    group = "rezozer";
+    owner = "forks";
+    repo = "sympow";
+    rev = "v${version}";
+    sha256 = "0j2qdw9csbr081h8arhlx1z7ibgi5am4ndmvyc8y4hccfa8n4w1y";
   };
 
+  postUnpack = ''
+    patchShebangs .
+  '';
+
   nativeBuildInputs = [
     makeWrapper
+    which
+    autoconf
+    help2man
+    file
+    pari
   ];
 
   configurePhase = ''
     runHook preConfigure
+    export PREFIX="$out"
+    export VARPREFIX="$out" # see comment on postInstall
     ./Configure # doesn't take any options
     runHook postConfigure
   '';
 
-  installPhase = ''
-    runHook preInstall
-    install -D datafiles/* --target-directory "$out/share/sympow/datafiles/"
-    install *.gp "$out/share/sympow/"
-    install -Dm755 sympow "$out/share/sympow/sympow"
-    install -D new_data "$out/bin/new_data"
-
-    makeWrapper "$out/share/sympow/sympow" "$out/bin/sympow" \
-      --run 'export SYMPOW_LOCAL="$HOME/.local/share/sympow"' \
-      --run 'if [ ! -d "$SYMPOW_LOCAL" ]; then
-        mkdir -p "$SYMPOW_LOCAL" 
-        cp -r ${placeholder "out"}/share/sympow/* "$SYMPOW_LOCAL"
-        chmod -R +xw "$SYMPOW_LOCAL"
-    fi' \
-      --run 'cd "$SYMPOW_LOCAL"'
-    runHook postInstall
+  # Usually, sympow has 3 levels of caching: statically distributed in /usr/,
+  # shared in /var and per-user in ~/.sympow. The shared cache assumes trust in
+  # other users and a shared /var is not compatible with nix's approach, so we
+  # set VARPREFIX to the read-only $out. This effectively disables shared
+  # caching. See https://trac.sagemath.org/ticket/3360#comment:36 and sympow's
+  # README for more details on caching.
+  # sympow will complain at runtime about the lack of write-permissions on the
+  # shared cache. We pass the `-quiet` flag by default to disable this.
+  postInstall = ''
+    wrapProgram "$out/bin/sympow" --add-flags '-quiet'
   '';
 
-  patches = [
-    # don't hardcode paths
-    (fetchpatch {
-      name = "do_not_hardcode_paths.patch";
-      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/sympow/patches/Configure.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
-      sha256 = "1611p8ra8zkxvmxn3gm2l64bd4ma4m6r4vd6vwswcic91k1fci04";
-    })
-
-    # bug on some platforms in combination with a newer gcc:
-    # https://trac.sagemath.org/ticket/11920
-    (fetchpatch {
-      name = "fix_newer_gcc1.patch";
-      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/sympow/patches/fpu.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
-      sha256 = "14gfa56w3ddfmd4d5ir9a40y2zi43cj1i4d2l2ij9l0qlqdy9jyx";
-    })
-    (fetchpatch {
-      name = "fix_newer_gcc2.patch";
-      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/sympow/patches/execlp.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
-      sha256 = "190gqhgz9wgw4lqwz0nwb1izc9zffx34bazsiw2a2sz94bmgb54v";
-    })
-
-    # fix pointer initialization bug (https://trac.sagemath.org/ticket/22862)
-    (fetchpatch {
-      name = "fix_pointer_initialization1.patch";
-      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/sympow/patches/initialize-tacks.patch?id=07d6c37d18811e2b377a9689790a7c5e24da16ba";
-      sha256 = "02341vdbbidfs39s26vi4n5wigz619sw8fdbl0h9qsmwwhscgf85";
-    })
-    (fetchpatch {
-      name = "fix_pointer_initialization2.patch";
-      url = "https://git.archlinux.org/svntogit/community.git/plain/trunk/sympow-datafiles.patch?h=packages/sympow&id=5088e641a45b23d0385d8e63be65315129b4cf58";
-      sha256 = "1m0vz048layb47r1jjf7fplw650ccc9x0w3l322iqmppzmv3022a";
-    })
-  ];
+  # Example from the README as a sanity check.
+  doInstallCheck = true;
+  installCheckPhase = ''
+    export HOME="$TMP/home"
+    mkdir -p "$HOME"
+    "$out/bin/sympow" -sp 2p16 -curve "[1,2,3,4,5]" | grep '8.3705'
+  '';
 
   meta = with stdenv.lib; {
-    description = "A package to compute special values of symmetric power elliptic curve L-functions";
+    description = "Compute special values of symmetric power elliptic curve L-functions";
     license = {
       shortName = "sympow";
       fullName = "Custom, BSD-like. See COPYING file.";
       free = true;
     };
     maintainers = with maintainers; [ timokau ];
-    platforms = platforms.all;
+    platforms = platforms.linux;
   };
 }