From: helmut@subdivi.de 
  
 Source: resvg 
 Version: 0.45-1.2 
 Severity: serious 
 Justification: missing dependency 
 User: debian-cross@lists.debian.org 
 Usertags: ftcbfs 
 X-Debbugs-Cc: debian-cross@lists.debian.org,debian-rust@lists.debian.org 
  
 Hi, 
  
 resvg fails to cross build from source for three distinct reasons. On 
 the surface, the core crate cannot be found. This is due to a missing 
 dependency on libstd-rust-dev and missing dependencies usually are RC 
 bugs. If you fix that, close this bug or lower its severity. 
  
 Next up, it uses the build architecture compiler for linking the resvg 
 executable. I spent some time trying to understand why an asked Fabian 
 for help, but I wasn't able to figure out the root cause. I confirm, 
 that dh-rust correctly inserts -C linker=... into the config.toml in 
 section [target.'cfg(all())'], but the actual linker invocation lacks 
 both the supplied linker and link-arg. I note that dh-cargo uses a 
 different section [build], but changing the section to match dh-cargo's 
 does not fix the problem. Would someone else see what the problem is 
 here? 
  
 Last but not least, resvg uses help2man and that is fundamentally 
 incompatible with cross building. Your options roughly are: 
  * Move manual pages to an Arch:all package. 
  * Generate manual pages at source package construction time. 
  * Cross build unreproducibly without manual pages. 
  * Write real manual pages. 
  * Duplicate all Build-Depends as :native and build the crate natively 
    as well. 
  * Write a scrip that exrtacts the HELP variable from main.rs and passes 
    that to help2man without actually compiling the crate. 
 None of these are attractive to me. I've done the last one elsewhere, 
 but it is a workaround at best. 
  
 I'm not sure we want to treat this report, but only the first of these 
 items is a trivially fixable RC bug and the other items lack patches. 
  
 Generally, I take issue with the tool duplication of dh-cargo vs 
 dh-rust. This imposes extra effort onto other teams (such as cross 
 building). I strongly recommend that you settle on one tool, but then I 
 also recognize that the duplication does not exist without reason and 
 each of the approaches probably provides unique advantages that warrant 
 the duplication to you. For instance, just switching resvg to dh-cargo 
 does not work as it fails to locate and build the contained crates. 
  
 Helmut 
  
 --- SoupGate-Win32 v1.05 
  * Origin: you cannot sedate... all the things you hate (1:229/2)