diff --git a/pkgs/applications/misc/electron-cash/default.nix b/pkgs/applications/misc/electron-cash/default.nix
index c852620d798..4f8c5f8bb8b 100644
--- a/pkgs/applications/misc/electron-cash/default.nix
+++ b/pkgs/applications/misc/electron-cash/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, python3Packages, qtbase, fetchpatch, wrapQtAppsHook
+{ lib, stdenv, fetchFromGitHub, python3Packages, qtbase, fetchpatch, wrapQtAppsHook
 , secp256k1 }:
 
 python3Packages.buildPythonApplication rec {
@@ -61,7 +61,7 @@ python3Packages.buildPythonApplication rec {
     pytest electroncash/tests
   '';
 
-  postInstall = ''
+  postInstall = lib.optionalString stdenv.isLinux ''
     substituteInPlace $out/share/applications/electron-cash.desktop \
       --replace "Exec=electron-cash" "Exec=$out/bin/electron-cash"
   '';
@@ -92,7 +92,7 @@ python3Packages.buildPythonApplication rec {
       of the blockchain.
     '';
     homepage = "https://www.electroncash.org/";
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     maintainers = with maintainers; [ lassulus nyanloutre oxalica ];
     license = licenses.mit;
   };
diff --git a/pkgs/applications/misc/makeself/default.nix b/pkgs/applications/misc/makeself/default.nix
index e60e110087f..12d4f62a783 100644
--- a/pkgs/applications/misc/makeself/default.nix
+++ b/pkgs/applications/misc/makeself/default.nix
@@ -12,9 +12,12 @@ stdenv.mkDerivation rec {
     sha256 = "07cq7q71bv3fwddkp2863ylry2ivds00f8sjy8npjpdbkailxm21";
   };
 
-  patchPhase = "patchShebangs test";
+  postPatch = "patchShebangs test";
 
-  doCheck = true;
+  # Issue #110149: our default /bin/sh apparently has 32-bit math only
+  # (attribute busybox-sandbox-shell), and that causes problems
+  # when running these tests inside build, based on free disk space.
+  doCheck = false;
   checkTarget = "test";
   checkInputs = [ which zstd pbzip2 ];
 
@@ -31,7 +34,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    homepage = "http://megastep.org/makeself";
+    homepage = "https://makeself.io";
     description = "Utility to create self-extracting packages";
     license = licenses.gpl2;
     maintainers = [ maintainers.wmertens ];
diff --git a/pkgs/os-specific/linux/busybox/sandbox-shell.nix b/pkgs/os-specific/linux/busybox/sandbox-shell.nix
index f5db0b25f18..fa70e5f91d8 100644
--- a/pkgs/os-specific/linux/busybox/sandbox-shell.nix
+++ b/pkgs/os-specific/linux/busybox/sandbox-shell.nix
@@ -8,6 +8,7 @@ busybox.override {
     CONFIG_FEATURE_FANCY_ECHO y
     CONFIG_FEATURE_SH_MATH y
     CONFIG_FEATURE_SH_MATH_64 y
+    CONFIG_FEATURE_TEST_64 y
 
     CONFIG_ASH y
     CONFIG_ASH_OPTIMIZE_FOR_SIZE y