diff --git a/run b/run
index ad913ec..846a085 100755
--- a/run
+++ b/run
@@ -1,8 +1,9 @@
 #! /usr/bin/env nix-shell
 #! nix-shell -i fish -p fish feedgnuplot
 
+set exe (fd --type f  '^haga$' dist-newstyle/)
 
-dist-newstyle/build/x86_64-linux/ghc-8.8.3/haga-0.1.0.0/x/haga/build/haga/haga $argv | \
+"$exe" $argv | \
     # dist-newstyle/build/x86_64-linux/ghc-8.6.5/ga-0.1.0.0/x/ga/build/ga/ga $argv | \
     feedgnuplot \
     --terminal "x11 background '#ffffff'" \