Test a configuration for using basic auth with reverse proxy

.gitignore

@@ -158,3 +158,6 @@ cython_debug/
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
+
+# nixos-shell
+nixos.qcow2

shell.nix

@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = [ pkgs.nixos-shell ];
+}

vm.nix

@@ -0,0 +1,58 @@
+{ pkgs, ... }: {
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+  nixos-shell.mounts = {
+    mountHome = false;
+    mountNixProfile = false;
+    cache = "none";
+  };
+
+  services.nginx.enable = true;
+  services.nginx.virtualHosts = {
+    alpha-fsid = {
+      listen = [ { addr = "localhost"; port = 8030; } ];
+      locations."/".tryFiles = "/dev/null @dummy";
+      locations."@dummy" = {
+        return = "200 'this is alpha'";
+        extraConfig = ''
+          add_header Content-Type text/plain always;
+        '';
+      };
+    };
+    beta-fsid = {
+      listen = [ { addr = "localhost"; port = 8031; } ];
+      locations."/".tryFiles = "/dev/null @dummy";
+      locations."@dummy" = {
+        return = "200 'youve reached beta'";
+        extraConfig = ''
+          add_header Content-Type text/plain always;
+        '';
+      };
+    };
+    redirector = {
+      listen = [ { addr = "localhost"; port = 8032; } ];
+      locations."/" = {
+        proxyPass = "http://127.0.0.1:$target_port";
+        basicAuth = { alpha = "alpha"; beta = "beta"; };
+      };
+      extraConfig = ''
+        if ($remote_user ~ "alpha|^$") {
+          set $target_port 8030;
+        }
+        if ($remote_user = "beta") {
+          set $target_port 8031;
+        }
+      '';
+    };
+  };
+
+  users.users.alpha = {
+    isNormalUser = true;
+    password = "alpha";
+  };
+
+  users.users.beta = {
+    isNormalUser = true;
+    password = "beta";
+  };
+}