Add p command to paste files

Reviewed-by: Aleix Boné <abonerib@bsc.es>

m/hut/configuration.nix

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

m/hut/nginx.nix

@@ -55,6 +55,9 @@ in
           autoindex on;
           absolute_redirect off;
         }
+        location /p/ {
+          alias /ceph/p/;
+        }
       '';
     };
   };

m/hut/p.nix

@@ -0,0 +1,24 @@
+{ pkgs, ... }:
+let
+  p = pkgs.writeShellScriptBin "p" ''
+    set -e
+    cd /ceph
+    pastedir="p/$USER"
+    mkdir -p "$pastedir"
+
+    ext="txt"
+
+    if [ -n "$1" ]; then
+      ext="$1"
+    fi
+
+    out=$(mktemp "$pastedir/XXXXXXXX.$ext")
+
+    cat > "$out"
+    chmod go+r "$out"
+    echo "https://jungle.bsc.es/$out"
+  '';
+in
+{
+  environment.systemPackages = with pkgs; [ p ];
+}