Re: [rcs] restrict coverage analysis to src/, tests/

[Ludovic Courtès]

Hi,

Thien-Thi Nguyen <address@hidden> writes:

> Unfortunately the nixpkgs-manual.html i have locally is at "draft (version
> 0.14)" and does not even mention the "coverage" phase, else i'd take a look
> at what's involved.  I see from the output:
>
>           ☆ Scanning . for .gcda files ...
>           ☆ Found 45 data files in .
>           ☆ Processing src/rcstime.gcda
>           ☆ Processing src/rcsgen.gcda
>             [...]
>           ☆ Processing src/rcsmap.gcda                                        
>       
>           ☆ Processing src/b-fro.gcda                                         
>       
>           ☆ Processing tests/btdt.gcda                                        
>       
>           ☆ Processing lib/fcntl.gcda                                         
>       
>             [...]
>           ☆ Processing lib/xalloc-die.gcda                                    
>       
>           ☆ Finished .info-file creation                                      
>       
>           ☆ Reading tracefile app.info                                        
>       
>           ☆ Overall coverage rate:                                            
>       
>
> so i guess the overall approach would be to change the one scan into two,
> specifying both resulting tracefiles instead of the monolithic app.info.

These messages come from LCOV, which is what is used here.

The Nix code for ‘codeCoverage’ is at
<https://svn.nixos.org/repos/nix/nixpkgs/trunk/pkgs/build-support/release/nix-build.nix>.

But really, I think you shouldn’t worry about wasted cycles.  :-)

Thanks,
Ludo’.