diff --git a/flake.lock b/flake.lock
index f1258ea..56c425a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,24 @@
 {
     "inputs": {
+        "dhall-haskell": {
+            "inputs": {
+                "nixpkgs": {
+                    "inputs": {},
+                    "narHash": "sha256-wJg4DA700SoQbEz61448sR6BgxRa1R92K3vvCV1g+HY=",
+                    "originalUrl": "git+https://github.com/nixos/nixpkgs.git?ref=18.09-beta&rev=1d4de0d552ae9aa66a5b8dee5fb0650a4372d148",
+                    "url": "git+https://github.com/nixos/nixpkgs.git?ref=18.09-beta&rev=1d4de0d552ae9aa66a5b8dee5fb0650a4372d148"
+                },
+                "nixpkgsStaticLinux": {
+                    "inputs": {},
+                    "narHash": "sha256-famU3pJZ4vkElV9qc71HmyRVSvcrAhfMZ0UJKpmmKP8=",
+                    "originalUrl": "git+https://github.com/nh2/nixpkgs.git?ref=static-haskell-nix-stack-dhall-working",
+                    "url": "git+https://github.com/nh2/nixpkgs.git?ref=static-haskell-nix-stack-dhall-working&rev=925aac04f4ca58aceb83beef18cb7dae0715421b"
+                }
+            },
+            "narHash": "sha256-KJl9ZLcMcEsLSPcwcWoc0Ac74/6HKC9LkVMeLwhyhlg=",
+            "originalUrl": "git+https://github.com/dhall-lang/dhall-haskell?ref=flake",
+            "url": "git+https://github.com/dhall-lang/dhall-haskell?ref=flake&rev=aea28adf3d10ff1982aa4ddd176d1476251b932f"
+        },
         "nixpkgs": {
             "inputs": {},
             "narHash": "sha256-NB+H7zK3BB//zM127FqgbG4iAfY+nS/IOyO+uGWA5Ho=",
diff --git a/flake.nix b/flake.nix
index edfbc65..6f2f81a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,21 +3,29 @@
 
   edition = 201909;
 
-  outputs = { self, nixpkgs }:
+  inputs.dhall-haskell.uri =
+    "git+https://github.com/dhall-lang/dhall-haskell?ref=flake";
+
+  outputs = { self, nixpkgs, dhall-haskell }:
     let
+      localSystem = "x86_64-linux";
+      localPackages = nixpkgs.legacyPackages.${localSystem};
+
       unpack = baseUrl:
         { name, value }: {
           inherit name;
-          value = nixpkgs.legacyPackages.x86_64-linux.stdenvNoCC.mkDerivation {
+          value = localPackages.stdenvNoCC.mkDerivation {
             pname = name;
             inherit (value) version;
+            outputs = [ "out" "manifest" ];
             preferLocalBuild = true;
-            src = nixpkgs.legacyPackages.x86_64-linux.fetchurl {
+            src = localPackages.fetchurl {
               url = "${baseUrl}${name}/${value.version}.tar.xz";
               inherit (value) sha256;
             };
             dontConfigure = true;
             dontBuild = true;
+            buildInputs = [ dhall-haskell.packages.${localSystem}.dhall ];
             installPhase = ''
               find . -type f | while read FILE; do
                 case $FILE in
@@ -27,6 +35,28 @@
                   *) install -Dm555 -t $out/bin $FILE;;
                 esac
               done
+
+              local drv=$out
+              echo '{' >> manifest.tmp
+              if [ -d $drv/bin ]; then
+                echo ', bin = {' >> manifest.tmp
+                find $drv/bin/ -type f -printf ', %f = { mapKey = "%f", mapValue = "%p" }\n' >> manifest.tmp
+                echo '}' >> manifest.tmp
+              fi
+              if [ -d $drv/lib ]; then
+                echo ', lib = {' >> manifest.tmp
+                find $drv/lib/ -type f -name '*.lib.so' -printf '%f "%p"\n' \
+                  | awk '{print ", "gensub(/.lib.so/, "", 1, $1)" = { mapKey = \""$1"\", mapValue = "$2" }" }'>> manifest.tmp
+                echo '}' >> manifest.tmp
+              fi
+              if [ -d $drv/tar ]; then
+                echo ', tar = {' >> manifest.tmp
+                find $drv/tar/ -type f -name '*.tar' -printf '%f "%p"\n' \
+                  | awk '{print ""gensub(/.tar/, "", 1, $1)" = { mapKey = \""$1"\", mapValue = "$2" }" }'>> manifest.tmp
+                echo '}' >> manifest.tmp
+              fi
+              echo '}' >> manifest.tmp
+              dhall < manifest.tmp > $manifest
             '';
             meta = {
               license = [ "LicenseRef-Genode" ];