[OE-core] [PATCH] npm.bbclass: Add npm class to match fetcher

[Trevor Woerner]

On 02/28/16 03:32, Richard Purdie wrote:
> On Sat, 2016-02-27 at 19:53 -0500, Trevor Woerner wrote:
>> On 02/25/16 10:06, brendan.le.foll at intel.com wrote:
>>> npm class supports the npm fetcher, helping doing the basic
>>> compile/install
>>> stages of an npm package
>> Any chance you might have an npm recipe example? Maybe something like
>> express?
> Not express but there are some in:
>
> https://github.com/arfoll/meta-brendan-nodepkgs/tree/master/recipes-node

Thanks!

I guess I don't have enough "plumbing" quite yet. I have all the master 
branches of everything I need and I cherry picked Brendan's npm.bbclass 
but I still get:

$ bitbake forever

ERROR: ExpansionError during parsing 
/z/layerindex-master/layers/meta-brendan-nodepkgs/recipes-node/once/once_1.3.3.bb: 
Failure expanding variable do_fetch[file-checksums], expression was 
${@bb.fetch.get_checksum_file_list(d)} ${@get_lic_checksum_file_list(d)} 
which triggered exception NoMethodError: Could not find a fetcher which 
supports the URL: 'npm://registry.npmjs.org;name=once;version=1.3.3'

I'm not sure if this error is complaining about a fetcher issue (which I 
can't figure out because bitbake does have the commits with support for 
npm://) or a license/checksum error.