Initial commit

hello-derivation/default.nix

@@ -0,0 +1,16 @@
+let
+  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-23.05";
+  pkgs = import nixpkgs { config = {}; overlays = []; };
+in
+  derivation {
+    name = "hello";
+    builder = "${pkgs.bash}/bin/bash";
+    args = [ ./hello_builder.sh ];
+    inherit (pkgs) gnutar gzip gnumake gcc coreutils gawk gnused gnugrep;
+    bintools = pkgs.binutils.bintools;
+    src = pkgs.fetchzip {
+      url = "https://ftp.gnu.org/gnu/hello/hello-2.12.1.tar.gz";
+      sha256 = "sha256-1kJjhtlsAkpNB7f6tZEs+dbKd8z7KoNHyDHEJ0tmhnc=";
+    };
+    system = builtins.currentSystem;
+  }

hello-derivation/hello_builder.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+export PATH="$gnutar/bin:$gcc/bin:$gnumake/bin:$coreutils/bin:$gawk/bin:$gzip/bin:$gnugrep/bin:$gnused/bin:$bintools/bin"
+
+echo $src
+# I guess changing nixos version will change behavior of how fetchzip or something.
+# This script differs from the version used against <nixpkgs>.
+cd $src
+ls -l
+./configure --prefix=$out
+make
+make install