Hi Danny, > unpack libgit2-0.27.7, then invoke > > guile generate.scm -o /tmp -f -x online -x stress -x perf . > > in there. Thanks for the instructions. One of the problems is that you use and also overwrite “write”, which is a core Scheme procedure. I renamed it to “Write” and modified the invocation to (call-with-output-file (string-append output "/clar.suite") Write) which leads to this error: --8<---------------cut here---------------start------------->8--- … In ice-9/ftw.scm: 482:39 4 (loop _ _ #(64768 139272 16877 51 1000 1000 0 4096 1550677456 0 1550677457 4096 8 directory 493 818358318 0 1550677457) _ _) In ice-9/eval.scm: 293:34 3 (_ #(#(#(#(#(# "." ("perf" "stress" "online")) "./tests/clar_libgit2_timer.c" #(64768 132360 33188 1 1000 1000 0 …) …) …) …) …)) 191:35 2 (_ #(#(# #>) "./tests/clar_libgit2_timer.c")) In ice-9/rdelim.scm: 160:18 1 (read-string _) In unknown file: 0 (read-char "./tests/clar_libgit2_timer.c") ERROR: In procedure read-char: In procedure read-char: Wrong type argument in position 1 (expecting open input port): "./tests/clar_libgit2_timer.c" --8<---------------cut here---------------end--------------->8--- Simple mistake: you called “get-string-all” on a string (stored in “path”), but you need to use (call-with-input-file path get-string-all) instead. Next error is about a bad regex (forgot one escape character); and a type error follows that. The fixed version is attached. -- Ricardo