Any way to minimize 8GB transitive closure size of haskell-template?

[ParetoOptimalDev]

It looks like a ghc expression is about 2GB:

$ nix path-info -S nixpkgs#pkgs.haskell.compiler.ghc94 
evaluating derivation 'flake:nixpkgs#pkgs.haskell.compiler.ghc94'/nix/store/jha99gc9172akfg326afb494gbrm6a1z-ghc-9.4.4   2773875752

Not sure what the rest is from or if it's feasible to be more thrifty. I bet with either of or both of ZFS and content addressed derivations it would be signifiantly less, but maybe this conversation is worth talking about.

[srid]

❯ nix path-info -S .#default
/nix/store/kv6yrjqs08nxirqvwjbi7lm763lbizcz-haskell-template-0.1.0.0	2688468536

But with,

diff --git a/flake.nix b/flake.nix
index e50e065..6f626a0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -90,7 +90,7 @@
         };
 
         # Default package.
-        packages.default = self'.packages.haskell-template;
+        packages.default = pkgs.haskell.lib.justStaticExecutables self'.packages.haskell-template;
 
         # Default shell.
         devShells.default = pkgs.mkShell {

we get:

❯ nix path-info -S .#default
warning: Git tree '/Users/srid/code/haskell-template' is dirty
/nix/store/ra02zpjymb3fyjsbaln661k13ayrnyws-haskell-template-0.1.0.0	  29160512

See https://haskell.flake.page/docker#size

Perhaps the documentation can be improved to explain this in the non-docker context.

[ParetoOptimalDev]

Thanks!