update flake

flake.nix

@@ -2,7 +2,10 @@
   description = "Opt-in Stack Flake";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
-  inputs.solc.url = "github:hellwolf/solc.nix";
+  inputs.solc = {
+      url = "github:hellwolf/solc.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+  };
 
   outputs = { self, nixpkgs, flake-utils, solc }:
     flake-utils.lib.eachDefaultSystem (system:
@@ -16,11 +19,13 @@
 
         hPkgs = pkgs.haskell.packages."ghc963"; # need to match Stackage LTS version from stack.yaml resolver
 
-        minimalDevTools = [
+        devTools = [
           hPkgs.ghc # GHC compiler in the desired version (will be available on PATH)
           pkgs.zlib # External C library needed by some Haskell packages
+          pkgs.libff
+          pkgs.secp256k1
           stack-wrapped
-          pkgs.solc_0_8_26
+          (solc.mkDefault pkgs pkgs.solc_0_8_26)
         ];
 
         stack-wrapped = pkgs.symlinkJoin {
@@ -30,25 +35,19 @@
           postBuild = ''
             wrapProgram $out/bin/stack \
               --add-flags "\
+                --no-nix \
                 --system-ghc \
                 --no-install-ghc \
               "
           '';
         };
       in {
         devShells.default = pkgs.mkShell {
-          buildInputs = minimalDevTools;
+          buildInputs = devTools;
 
           # Make external Nix c libraries like zlib known to GHC, like
           # pkgs.haskell.lib.buildStackProject does
-          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath minimalDevTools;
-        };
-        devShells.minimal = pkgs.mkShell {
-          buildInputs = minimalDevTools;
-
-          # Make external Nix c libraries like zlib known to GHC, like
-          # pkgs.haskell.lib.buildStackProject does
-          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath minimalDevTools;
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath devTools;
         };
       });
 }