diff --git a/manifest.dhall b/manifest.dhall
index d582f1f4ee6d29b275011936dc777d4b9d7be6ec..924e8afa3b8bbaa4b68a2ca18baadb478050e8a7 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -577,8 +577,8 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "refact" "0.3.0.2"
     , callHackage "regex-applicative" "0.3.4"
     , callHackage "regex-base" "0.94.0.2"
-    , callHackage "regex-tdfa" "1.3.2"
     , callHackage "regex-posix" "0.96.0.1"
+    , callHackage "regex-tdfa" "1.3.2"
     , callHackage "refined" "0.8"
     , callHackage "reflection" "2.1.6"
     , callHackage "relude" "1.1.0.0"
diff --git a/pkgs/entropy.nix b/pkgs/entropy.nix
new file mode 100644
index 0000000000000000000000000000000000000000..80c436913376fef8323fc14c5e95d55e1026e8c0
--- /dev/null
+++ b/pkgs/entropy.nix
@@ -0,0 +1,31 @@
+{ mkDerivation
+, base
+, bytestring
+, Cabal
+, directory
+, filepath
+, lib
+, process
+, unix
+}:
+mkDerivation {
+  pname = "entropy";
+  version = "0.4.1.10";
+  sha256 = "85ac1d53f1d1c095aedd23fdb20c8e3ada04a7fd8aa6d7e6445ae6a59a277de5";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  setupHaskellDepends = [ base Cabal directory filepath process ];
+  libraryHaskellDepends = [ base bytestring unix ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/TomMD/entropy";
+  description = "A platform independent entropy source";
+  license = lib.licenses.bsd3;
+  broken = false;
+}