diff --git a/pkgs/e11sync-static.nix b/pkgs/e11sync-static.nix
index 0a1e0b7..82d2739 100644
--- a/pkgs/e11sync-static.nix
+++ b/pkgs/e11sync-static.nix
@@ -2,7 +2,6 @@
   stdenv,
   runCommand,
   python3Packages,
-  coreutils,
   zopfli,
   brotli,
   findutils,
@@ -18,22 +17,23 @@
       dart-sass
       zopfli
       brotli
+      gawk
+      findutils
     ];
     patchPhase = ''patchShebangs --build manage.py'';
     buildPhase = ''
-      mkdir -p static
-      export E11SYNC_STATIC_ROOT=static
+      export E11SYNC_STATIC_ROOT=$PWD/static
       export E11SYNC_DEBUG=
       export E11SYNC_COMPRESS_OFFLINE=1
       ./manage.py collectstatic
       ./manage.py compress
 
-      ${findutils}/bin/find static/ \
+      find static/ \
           -name '*.css' -or \
           -name '*.js' -or \
           -name '*.svg' | \
-          ${gawk}/bin/awk '{print "zopfli "$0;print "brotli "$0}' | \
-          ${findutils}/bin/xargs -P''$(${coreutils}/bin/nproc) -I{} $SHELL -c {}
+          awk '{print "zopfli \""$0"\"";print "brotli \""$0"\""}' | \
+          xargs -P''$(nproc) -I{} $SHELL -c {}
     '';
     installPhase = ''mv static $out'';