Allow getting packages from unstable by prefixing unstable in package list

configuration.nix

@@ -28,6 +28,7 @@
     annotator # image annotation, KDE's Spectacle does too but only for screenshots it just took, maybe ksnip or shutter would be more flexible screenshot tools, hmm kdePackages.kquickimageedit and kdePackages.kimageannotator basically use the same tools as Spectacle, i'll try them too.
     ansible
     authenticator # 2-factor auth, it's for Gnome but it's the only good one (can scan in from the phone etc)
+    beets
     birdtray
     bitwarden-cli
     bitwarden-desktop
@@ -39,7 +40,7 @@
     # cruft
     cups-brother-hll2375dw
     curl
-    ddev
+    unstable.ddev
     diffr
     dig
     dmidecode
@@ -53,6 +54,7 @@
     fira-mono # coding font WITHOUT ligatures, thank god
     firefox
     firefoxpwa
+    flameshot # screenshots with annotations
     floorp
     fsearch
     getxbook
@@ -143,8 +145,8 @@
     reveal-md
     rink
     rofi
-    rustdesk
-    samba
+    # rustdesk - not using error-ish
+    # samba - not using…?
     sassc # Convenient to use directly, though it is deprecated in favor of dart-sass i think
     shortwave
     shotwell # Even though i'm not on Gnome anymore, really don't see the need to switch to KPhotoAlbum (NixOS has to download more for that anyway).  The other option is digikam and if getting into RAW and editing more, darktable
@@ -370,8 +372,16 @@
   # programs.appimage.enable = true;
   # programs.appimage.binfmt = true;
 
-  # Allow unfree packages
-  nixpkgs.config.allowUnfree = true;
+  nixpkgs.config = {
+    # Allow unfree packages
+    allowUnfree = true;
+    # Allow getting packages from unstable by prefixing unstable in package list.
+    packageOverrides = pkgs: {
+      unstable = import <nixpkgs> {
+        config = config.nixpkgs.config;
+      };
+    };
+  };
 
   # TODO remove this when Logseq gets its act together
   # nixpkgs.config.permittedInsecurePackages = [