sha256

commit 5f284283c0bfb3925d2ff4010c3545a532b64cbf
Author: Jared Tobin <jared@jtobin.io>
Date:   Mon,  8 Apr 2024 17:00:28 +0400

nix: add flake skeleton

Diffstat:
A
flake.nix
 | 
59
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 59 insertions(+), 0 deletions(-)
diff --git a/flake.nix b/flake.nix
@@ -0,0 +1,59 @@
+{
+  description = "ppad-sha256";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        lib = "ppad-sha256";
+
+        pkgs = import nixpkgs { inherit system; };
+        hlib = pkgs.haskell.lib;
+
+        hpkgs = pkgs.haskell.packages.ghc964;
+        # hpkgs = pkgs.haskell.packages.ghc964.override {
+        #   overrides = new: old: {
+        #     ${lib} = old.callCabal2nix lib ./. {};
+        #   };
+        # };
+
+        cc    = pkgs.stdenv.cc;
+        ghc   = hpkgs.ghc;
+        cabal = hpkgs.cabal-install;
+      in
+        {
+          # packages.${lib} = hpkgs.${lib};
+
+          # defaultPackage = self.packages.${system}.${lib};
+
+          devShells.default = hpkgs.shellFor {
+            packages = p: [ ];
+            # packages = p: [
+            #   (hlib.doBenchmark p.${lib})
+            # ];
+
+            buildInputs = [
+              cabal
+              cc
+            ];
+
+            # inputsFrom = builtins.attrValues self.packages.${system};
+
+            # doBenchmark = true;
+
+            shellHook = ''
+              PS1="[${lib}] \w$ "
+              echo "entering ${system} shell, using"
+              echo "cc:    $(${cc}/bin/cc --version)"
+              echo "ghc:   $(${ghc}/bin/ghc --version)"
+              echo "cabal: $(${cabal}/bin/cabal --version)"
+            '';
+          };
+        }
+      );
+}
+