diff --git a/pkgs/os-specific/bsd/default.nix b/pkgs/os-specific/bsd/default.nix
index 5f094a8dad3f..a75c132b55a2 100644
--- a/pkgs/os-specific/bsd/default.nix
+++ b/pkgs/os-specific/bsd/default.nix
@@ -2,7 +2,4 @@
 
 rec {
   netbsd = recurseIntoAttrs (callPackages ./netbsd {});
-  openbsd = recurseIntoAttrs (callPackages ./openbsd {
-    inherit (netbsd) compat netBSDDerivation libcurses libterminfo;
-  });
 }
diff --git a/pkgs/os-specific/bsd/openbsd/default.nix b/pkgs/os-specific/bsd/openbsd/default.nix
deleted file mode 100644
index 6d909e1c5566..000000000000
--- a/pkgs/os-specific/bsd/openbsd/default.nix
+++ /dev/null
@@ -1,48 +0,0 @@
-{ fetchcvs, netBSDDerivation, compat, libcurses, libterminfo }:
-
-let
-  fetchOpenBSD = path: version: sha256: fetchcvs {
-    cvsRoot = "anoncvs@anoncvs.ca.openbsd.org:/cvs";
-    module = "src/${path}";
-    inherit sha256;
-    tag = "OPENBSD_${builtins.replaceStrings ["."] ["_"] version}";
-  };
-
-  # OpenBSD is a fork of NetBSD
-  # We can build it with minimal changes
-  openBSDDerivation = attrs: netBSDDerivation (attrs // {
-    name = "${attrs.pname or (baseNameOf attrs.path)}-openbsd-${attrs.version}";
-    src = fetchOpenBSD attrs.path attrs.version attrs.sha256;
-  });
-
-in {
-
-  mg = openBSDDerivation {
-    path = "usr.bin/mg";
-    version = "6.3";
-    sha256 = "0n3hwa81c2mcjwbmidrbvi1l25jh8hy939kqrigbv78jixpynffc";
-    buildInputs = [ compat libcurses libterminfo ];
-    patchPhase = ''
-      NIX_CFLAGS_COMPILE+=" -I$BSDSRCDIR/sys"
-      substituteInPlace fileio.c \
-        --replace "bp->b_fi.fi_mtime.tv_sec != sb.st_mtimespec.tv_sec" "bp->b_fi.fi_mtime.tv_sec != sb.st_mtim.tv_sec" \
-        --replace "bp->b_fi.fi_mtime.tv_nsec != sb.st_mtimespec.tv_nsec" "bp->b_fi.fi_mtime.tv_nsec != sb.st_mtim.tv_nsec" \
-        --replace "bp->b_fi.fi_mtime = sb.st_mtimespec" "bp->b_fi.fi_mtime = sb.st_mtim"
-      substituteInPlace Makefile \
-        --replace "-o root -g wheel" "" \
-        --replace '-o ''${DOCOWN} -g ''${DOCGRP}' ""
-    '';
-    NIX_CFLAGS_COMPILE = [ "-DTCSASOFT=0x10" "-Dpledge(a,b)=0" ];
-    preBuild = ''
-      cc -c $BSDSRCDIR/lib/libc/stdlib/strtonum.c -o strtonum.o
-      NIX_LDFLAGS+=" strtonum.o"
-    '';
-    extraPaths = [
-      (fetchOpenBSD "sys/sys/tree.h" "6.3" "0rimh41wn9wz5m510zk9i27z3s450qqgq2k5xn8kp3885hygbcj9")
-      (fetchOpenBSD "sys/sys/_null.h" "6.3" "0l2rgg9ai4ivfl07zmbqli19vnm3lj7qkxpikqplmzrfp36qpzgr")
-      (fetchOpenBSD "sys/sys/_null.h" "6.3" "0l2rgg9ai4ivfl07zmbqli19vnm3lj7qkxpikqplmzrfp36qpzgr")
-      (fetchOpenBSD "lib/libc/stdlib/strtonum.c" "6.3" "0xn3qxvb3g76hz698sjkf85p07zrcdv2g31inp8caqw2mpk6jadv")
-     ];
-  };
-
-}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 31a1acff06ee..beffac76715f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21379,5 +21379,5 @@ with pkgs;
                       mount wall hostname more sysctl;
 
   inherit (recurseIntoAttrs (callPackages ../os-specific/bsd { }))
-          netbsd openbsd;
+          netbsd;
 }