Hello, I am getting there! Everything compiled, and there is now a hello package. Or rather, lots of them. /nix/store contains 1 hello-2.8.tar.gz 3 hello-2.8.tar.gz.drv 3 hello-2.8.tar.gz-guile-builder 2 hello-2.8 2 hello-2.8.drv 2 hello-2.8-guile-builder Altogether 13 files or directories, with different hashes prepended. Unfortunately, all files have the date "Jan 1 1970". It would be nice to use the real date of modification instead. The command guix-package -i hello still produces an error, probably related to making the symlinks in my own environment: Backtrace: In ice-9/boot-9.scm: 149: 12 [catch #t # ...] 157: 11 [#] In unknown file: ?: 10 [catch-closure] In ice-9/boot-9.scm: 63: 9 [call-with-prompt prompt0 ...] In ice-9/eval.scm: 407: 8 [eval # #] In unknown file: ?: 7 [call-with-input-string "(apply (module-ref (resolve-interface '(guix-package)) 'guix-package) (cdr (command-line)))" ...] In ice-9/command-line.scm: 174: 6 [# #] In unknown file: ?: 5 [eval (apply (module-ref # #) (cdr #)) #] In ice-9/boot-9.scm: 149: 4 [catch srfi-34 # ...] 157: 3 [#] In /usr/local/bin/guix-package: 438: 2 [#] 379: 1 [process-actions (# #)] In unknown file: ?: 0 [symlink "/nix/store/1n6bpxkjq2w1m8nlyc6c6bpf0y8rspi0-user- environment" ...] ERROR: In procedure symlink: ERROR: In procedure symlink: No such file or directory The directory "/nix/store/1n6bpxkjq2w1m8nlyc6c6bpf0y8rspi0-user-environment" exists, and its subdirectory "bin" contains a link "hello" to /nix/store/g0izbi5fdmnpgc6mwi45sxks390fkm1v-hello-2.8/bin/hello. So far, there is no ".guix-profile" in my home directory; but creating it does not change the error message. Do I need to do anything special? If yes, it would be good to add a section "installation" to the manual. I suppose I also need to add a line to my .bashrc to modify $PATH ? Andreas