On Wed, Mar 06, 2019 at 02:17:49PM +0100, Ludovic Courtès wrote: > Hi Florian, > > "pelzflorian (Florian Pelz)" <pelzflor...@pelzflorian.de> skribis: > > > The Guix manual contains the following description of gexp->file: > > > > -- Monadic Procedure: gexp->file NAME EXP [#:set-load-path? #t] > > [#:module-path %load-path] [#:splice? #f] [#:guile > > (default-guile)] Return a derivation that builds a file NAME > > containing EXP. When SPLICE? is true, EXP is considered to be a > > list of expressions that will be spliced in the resulting file. > > > > When SET-LOAD-PATH? is true, emit code in the resulting file to set > > ‘%load-path’ and ‘%load-compiled-path’ to honor EXP’s imported > > modules. Look up EXP’s modules in MODULE-PATH. > > > > The resulting file holds references to all the dependencies of EXP > > or a subset thereof. > > > > I do not understand this last sentence. How can it be a subset? A > > subset of what? Can this be explained more clearly or removed? > > It can be a subset of the references of EXP because, when a build > completes, the daemon scan the output(s) to determine the set of > residual references. That’s the difference between build-time and > run-time dependencies. > > For instance, ‘sed’ depends on ‘gcc’ and ‘gcc:lib’ at build time, but > its output depends only on ‘gcc:lib’. > > Does that make sense? > > Ludo’.
Thank you. I did not know this is how the daemon determines outputs’ references. In this case I would understand the manual more easily if it said: The output(s) resulting from this derivation will be scanned for references by the daemon. They can hold references to all the dependencies of EXP or a subset thereof. Please make this more clear in the manual. Regards, Florian
