Update packages in nix.

nix/configuration/configuration.nix

@@ -166,6 +166,7 @@
     nixpkgs.overlays =
       let
         disableTests = (
+          # Example: (disableTests "coreutils")
           package_name:
           (final: prev: {
             "${package_name}" = prev."${package_name}".overrideAttrs (old: {
@@ -174,23 +175,65 @@
             });
           })
         );
+        disableTestsPython = (
+          # Example: (disableTestsPython "scipy")
+          package_name:
+          (final: prev: {
+            pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
+              (python-final: python-prev: {
+                "${package_name}" = python-prev."${package_name}".overridePythonAttrs (oldAttrs: {
+                  doCheck = false;
+                });
+              })
+            ];
+          })
+        );
+        disableOptimizations = (
+          # Example: (disableOptimizations "coreutils")
+          package_name:
+          (final: prev: {
+            "${package_name}" = final.unoptimized."${package_name}";
+          })
+        );
+        disableOptimizationsScope = (
+          # Example: (disableOptimizationsScope "kdePackages" "qtbase")
+          scope: package_name:
+          (final: prev: {
+            "${scope}" = prev."${scope}".overrideScope (
+              scopeFinal: scopePrev: {
+                "${package_name}" = final.unoptimized."${scope}"."${package_name}";
+              }
+            );
+          })
+        );
+        disableOptimizationsPython3 = (
+          # Example: (disableOptimizationsPython3 "scipy")
+          package_name:
+          (final: prev: {
+            python3Packages = prev.python3Packages.override {
+              overrides = python-final: python-prev: {
+                "${package_name}" = final.unoptimized.python3.pkgs."${package_name}";
+              };
+            };
+          })
+        );
       in
       [
+        (disableTests "coreutils")
+        (disableTests "coreutils-full")
+        (disableTests "libuv")
+        (final: prev: {
+          inherit (final.unoptimized) libtpms libjxl;
+        })
+        (disableOptimizationsPython3 "scipy")
+        # Works but probably sets python2's scipy to be python3:
+        #
         # (final: prev: {
-        #   imagemagick = prev.imagemagick.overrideAttrs (old: rec {
-        #     # 7.1.2-6 seems to no longer exist, so use 7.1.2-7
-        #     version = "7.1.2-7";
-
-        #     src = final.fetchFromGitHub {
-        #       owner = "ImageMagick";
-        #       repo = "ImageMagick";
-        #       tag = version;
-        #       hash = "sha256-9ARCYftoXiilpJoj+Y+aLCEqLmhHFYSrHfgA5DQHbGo=";
-        #     };
-        #   });
-        # })
-        # (final: prev: {
-        #   grub2 = (final.callPackage ./package/grub { });
+        #   pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
+        #     (python-final: python-prev: {
+        #       scipy = final.unoptimized.python3Packages.scipy;
+        #     })
+        #   ];
         # })
       ];