diff --git a/nix/packages/default.nix b/nix/packages/default.nix
index d057b475..31b75a89 100644
--- a/nix/packages/default.nix
+++ b/nix/packages/default.nix
@@ -18,6 +18,13 @@
       pkgs.haskell.lib.dontHaddock
       pkgs.haskell.lib.justStaticExecutables
     ];
+
+  infuse-lib = import sources.infuse {
+    inherit lib;
+    sugars = infuse-lib.v1.default-sugars;
+  };
+
+  infuse = lib.flip infuse-lib.v1.infuse;
 in rec {
   # fonts
   altiosevka = pkgs.callPackage ./altiosevka {};
@@ -85,35 +92,29 @@ in rec {
   hbrainfuck = mkHaskellPackage {
     name = "hbrainfuck";
     src = sources.hbrainfuck;
-    # apply = p:
-    #   p.overrideAttrs (old: {
-    #     nativeBuildInputs = (old.nativeBuildInputs or []) ++ [pkgs.installShellFiles];
-    #     postInstall =
-    #       (old.postInstall or "")
-    #       + ''
-    #         installShellCompletion --cmd hbrainfuck \
-    #         --bash <("$out/bin/hbrainfuck" --bash-completion-script "$out/bin/hbrainfuck") \
-    #         --fish <("$out/bin/hbrainfuck" --fish-completion-script "$out/bin/hbrainfuck") \
-    #         --zsh  <("$out/bin/hbrainfuck" --zsh-completion-script  "$out/bin/hbrainfuck")
-    #       '';
-    #   });
+    apply = infuse {
+      __output.nativeBuildInputs.__append = [pkgs.installShellFiles];
+      __output.postInstall.__append = ''
+        installShellCompletion --cmd hbrainfuck \
+        --bash <("$out/bin/hbrainfuck" --bash-completion-script "$out/bin/hbrainfuck") \
+        --fish <("$out/bin/hbrainfuck" --fish-completion-script "$out/bin/hbrainfuck") \
+        --zsh  <("$out/bin/hbrainfuck" --zsh-completion-script  "$out/bin/hbrainfuck")
+      '';
+    };
   };
 
   prop-solveur = mkHaskellPackage {
     name = "prop-solveur";
     src = sources.prop_solveur;
-    apply = p:
-      p.overrideAttrs (old: {
-        nativeBuildInputs = (old.nativeBuildInputs or []) ++ [pkgs.installShellFiles];
-        postInstall =
-          (old.postInstall or "")
-          + ''
-            installShellCompletion --cmd prop-solveur \
-                --bash <("$out/bin/prop-solveur" --bash-completion-script "$out/bin/prop-solveur") \
-                --fish <("$out/bin/prop-solveur" --fish-completion-script "$out/bin/prop-solveur") \
-                --zsh  <("$out/bin/prop-solveur" --zsh-completion-script  "$out/bin/prop-solveur")
-          '';
-      });
+    apply = infuse {
+      __output.nativeBuildInputs.__append = [pkgs.installShellFiles];
+      __output.postInstall.__append = ''
+        installShellCompletion --cmd prop-solveur \
+            --bash <("$out/bin/prop-solveur" --bash-completion-script "$out/bin/prop-solveur") \
+            --fish <("$out/bin/prop-solveur" --fish-completion-script "$out/bin/prop-solveur") \
+            --zsh  <("$out/bin/prop-solveur" --zsh-completion-script  "$out/bin/prop-solveur")
+      '';
+    };
   };
 
   hutils = mkHaskellPackage {
diff --git a/nix/sources.json b/nix/sources.json
index 9aa59b6e..31bc98c9 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -67,6 +67,12 @@
         "rev": "ee04ec425af81e762362bc2c4bcd5d89ad50ddc8",
         "type": "git"
     },
+    "infuse": {
+        "branch": "trunk",
+        "repo": "https://codeberg.org/amjoseph/infuse.nix",
+        "rev": "c8fb7397039215e1444c835e36a0da7dc3c743f8",
+        "type": "git"
+    },
     "lix": {
         "branch": "main",
         "repo": "https://git.lix.systems/lix-project/lix.git",