remove shell.nix

shell.nix

@@ -1,37 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  name = "python-environment";
-  buildInputs = with pkgs; [
-    python3
-    python3Packages.virtualenv
-  ];
-  shellHook = ''
-    function log_header {
-      echo -ne "==> \e[32m\e[1m$1\e[0m\n\n"
-    }
-    function log_subheader {
-      echo -ne "--> \e[33m\e[1m$1\e[0m\n\n"
-    }
-    function log {
-      echo -ne "    $1\n"
-    }
-
-    echo ""
-    log_header "python_environment"
-    if [ ! -d .venv ]; then
-      python -m venv .venv
-    fi
-    source .venv/bin/activate
-    log_subheader "upgrading pip"
-    pip install --upgrade pip
-    echo ""
-    if [ -s requirements.txt ]; then
-      log_subheader "found requirements.txt, installing packages"
-      pip install -r requirements.txt
-      echo ""
-    fi
-    log_header "package versions"
-    log "$(python --version)"
-    log "$(pip --version)"
-  '';
-}