diff --git a/pkgs/tools/misc/entr/default.nix b/pkgs/tools/misc/entr/default.nix
new file mode 100644
index 000000000000..8770a5858875
--- /dev/null
+++ b/pkgs/tools/misc/entr/default.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchurl, coreutils, ncurses }:
+
+stdenv.mkDerivation rec {
+  name = "entr-${version}";
+  version = "3.2";
+
+  src = fetchurl {
+    url = "http://entrproject.org/code/${name}.tar.gz";
+    sha256 = "0ikigpfzyjmr8j6snwlvxzqamrjbhlv78m8w1h0h7kzczc5f1vmi";
+  };
+
+  postPatch = ''
+    substituteInPlace Makefile.bsd --replace /bin/echo echo
+    substituteInPlace entr.c --replace /bin/cat ${coreutils}/bin/cat
+    substituteInPlace entr.c --replace /usr/bin/clear ${ncurses}/bin/clear
+    substituteInPlace entr.1 --replace /bin/cat cat
+    substituteInPlace entr.1 --replace /usr/bin/clear clear
+  '';
+  dontAddPrefix = true;
+  doCheck = true;
+  checkTarget = "test";
+  installFlags = [ "PREFIX=$(out)" ];
+
+  meta = {
+    homepage = http://entrproject.org/;
+    description = "Run arbitrary commands when files change.";
+
+    license = stdenv.lib.licenses.isc;
+
+    platforms = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6bc69da5f287..dca8d2a9fea9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1415,6 +1415,8 @@ let
 
   enscript = callPackage ../tools/text/enscript { };
 
+  entr = callPackage ../tools/misc/entr { };
+
   eplot = callPackage ../tools/graphics/eplot { };
 
   ethtool = callPackage ../tools/misc/ethtool { };