change basically everything

It's a good thing that I'm not collaborating with anyone on this
repository, because this is REALLY bad practice.

fish/nixpkgs/flake.lock

@@ -1,43 +0,0 @@
-{
-  "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1722141560,
-        "narHash": "sha256-Ul3rIdesWaiW56PS/Ak3UlJdkwBrD4UcagCmXZR9Z7Y=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "038fb464fcfa79b4f08131b07f2d8c9a6bcc4160",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "nixpkgs": "nixpkgs",
-        "systems": "systems"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}

fish/nixpkgs/flake.nix

@@ -10,8 +10,8 @@
       packages = eachSystem (system:
         let pkgs = nixpkgs.legacyPackages.${system};
         in {
-          soe = pkgs.callPackage ./package.nix {};
-          default = self.packages.${system}.soe;
+          hello = pkgs.callPackage ./package.nix {};
+          default = self.packages.${system}.hello;
         });
     };
 }

fish/nixpkgs/hello

@@ -0,0 +1,3 @@
+#!/usr/bin/env fish
+
+echo "Hello, World!"

fish/nixpkgs/package.nix

@@ -1,10 +1,10 @@
-{ stdenv
+{ stdenvNoCC
 , fish
 }:
 
-stdenv.mkDerivation {
-  pname = "soe";
-  version = "1.0";
+stdenvNoCC.mkDerivation {
+  pname = "hello";
+  version = "0.1";
 
   src = ./.;
 
@@ -12,6 +12,6 @@ stdenv.mkDerivation {
 
   installPhase = ''
     mkdir -p $out/bin
-    cp soe $out/bin
+    cp hello $out/bin
   '';
 }

fish/nixpkgs/soe

@@ -1,19 +0,0 @@
-#!/usr/bin/env fish
-
-read -P "Primes up to: " num
-echo
-
-set nums (seq 2 $num)[..-2]
-
-while test -n "$nums"
-    set prime $nums[1]
-    echo -n "$prime "
-
-    set -e nums_
-    for elem in $nums
-        test (math $elem % $prime) -eq 0 || set -a nums_ $elem
-    end
-    set nums $nums_
-end
-
-echo