5 files changed, 5 insertions, 5 deletions
diff --git a/pkgs/tools/filesystems/darling-dmg/default.nix b/pkgs/tools/filesystems/darling-dmg/default.nix
index 7931df2cc57d..9e640b18a924 100644
--- a/pkgs/tools/filesystems/darling-dmg/default.nix
+++ b/pkgs/tools/filesystems/darling-dmg/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = http://www.darlinghq.org/;
-    description = "Darling lets you open OS X dmgs on Linux";
+    description = "Darling lets you open macOS dmgs on Linux";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.gpl3;
   };
diff --git a/pkgs/tools/misc/diffoscope/default.nix b/pkgs/tools/misc/diffoscope/default.nix
index 9c0d51c4a857..6472f1ea09c8 100644
--- a/pkgs/tools/misc/diffoscope/default.nix
+++ b/pkgs/tools/misc/diffoscope/default.nix
@@ -26,7 +26,7 @@ python3.pkgs.buildPythonApplication rec {
     sed -i setup.py -e "/'rpm-python',/d"
   '';
 
-  # Still missing these tools: enjarify, otool & lipo (maybe OS X only), showttf
+  # Still missing these tools: enjarify, otool & lipo (maybe macOS only), showttf
   # Also these libraries: python3-guestfs
   # FIXME: move xxd into a separate package so we don't have to pull in all of vim.
   pythonPath = with python3.pkgs;
diff --git a/pkgs/tools/misc/umlet/default.nix b/pkgs/tools/misc/umlet/default.nix
index 918ff2f31799..b7f08f908361 100644
--- a/pkgs/tools/misc/umlet/default.nix
+++ b/pkgs/tools/misc/umlet/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
       draw UML diagrams fast, produce sequence and activity diagrams from
       plain text, export diagrams to eps, pdf, jpg, svg, and clipboard,
       share diagrams using Eclipse, and create new, custom UML elements.
-      UMLet runs stand-alone or as Eclipse plug-in on Windows, OS X and
+      UMLet runs stand-alone or as Eclipse plug-in on Windows, macOS and
       Linux.
     '';
     homepage = http://www.umlet.com;
diff --git a/pkgs/tools/text/gnugrep/default.nix b/pkgs/tools/text/gnugrep/default.nix
index 0db140c7891c..089f3094b540 100644
--- a/pkgs/tools/text/gnugrep/default.nix
+++ b/pkgs/tools/text/gnugrep/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   #doCheck = !stdenv.isDarwin && !stdenv.isSunOS && !stdenv.isCygwin && !stdenv.isFreeBSD;
   doCheck = false;
 
-  # On Mac OS X, force use of mkdir -p, since Grep's fallback
+  # On macOS, force use of mkdir -p, since Grep's fallback
   # (./install-sh) is broken.
   preConfigure = ''
     export MKDIR_P="mkdir -p"
diff --git a/pkgs/tools/text/popfile/default.nix b/pkgs/tools/text/popfile/default.nix
index 4048093a3958..bda38297d66d 100644
--- a/pkgs/tools/text/popfile/default.nix
+++ b/pkgs/tools/text/popfile/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
     homepage = http://getpopfile.org;
     license = stdenv.lib.licenses.gpl2;
 
-    # Should work on OS X, but havent tested it.
+    # Should work on macOS, but havent tested it.
     # Windows support is more complicated.
     # http://getpopfile.org/docs/faq:systemrequirements
     platforms = stdenv.lib.platforms.linux;