Add p command to paste files

m/hut/configuration.nix

@@ -18,6 +18,7 @@
     ./msmtp.nix
     ./postgresql.nix
     ./nginx.nix
+    ./p.nix
     #./pxe.nix
   ];
 

m/hut/p.nix

@@ -0,0 +1,22 @@
+{ pkgs, ... }:
+let
+  p = pkgs.writeShellScriptBin "p" ''
+    set -e
+    cd /ceph
+    pastedir="p/$USER"
+    mkdir -p "$pastedir"
+
+    if [ -n "$1" ]; then
+            out="$pastedir/$1"
+    else
+            out=$(mktemp "$pastedir/XXXXXXXX.txt")
+    fi
+
+    cat > "$out"
+    chmod go+r "$out"
+    echo "https://jungle.bsc.es/$out"
+  '';
+in
+{
+  environment.systemPackages = with pkgs; [ p ];
+}