Can I build a package requiring npm in Chrome OS?

[Hirokazu Honda]

Hi, I am trying to add a new package. The CL is crosreview.com/781599.
npm is required for building a package.
I found third_party/chromiumos-overlay/net-libs/iojs. Looks like it
installs npm. Is it correct?
If yes, I think I can use npm to build shaka-player if I add
net-libs/iojs to the dependency of autotest-deps-shaka.ebuild.
I actually do so. However, I got errors when building iojs. The error
log is attached.

Thanks,
-Hiro

[Mike Frysinger]

currently nodejs/npm are not available inside the sdk.  there was one project that was using node on the board itself, but i don't think that was ever released, so you'll find random references like iojs in the tree.

-mike

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[Hirokazu Honda]

Thank you for the information.
So it is required to build iojs so that a package is built with npm.
As I said, building iojs is failed currently.
Should I file this bug?

-Hiro

[Mike Frysinger]

no one uses iojs, so I don't think a bug would help if your expectation is to have someone fix it. if you need the package, then you'd probably be on the hook to fix it.  if you want to post a cl to delete it, seems like it would be reviewed quickly.

-mike

[Hirokazu Honda]

I just uploaded the CL to update iojs version.
https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/844051
I confirmed iojs was built successfully. With the iojs, I tried to
build shaka-player, but I got an error which there is no npm in the
build environment.
> >>> Configuring source in /build/cyan/tmp/portage/chromeos-base/autotest-deps-shaka-2.2.6/work/shaka-player-2.2.6 ...
> /build/cyan/tmp/portage/chromeos-base/autotest-deps-shaka-2.2.6/temp/environment: line 1089: npm: command not found

npm is installed /build/cyan/usr/bin/npm by iojs ebuild.

Best,
-Hiro

[Mike Frysinger]

/build/xxx/ is the sysroot.  you can only compile/link against files in there.  npm is a tool that executes in the sdk build system.  we cannot (by design) execute programs out of the sysroot.  build time tools have to be part of the SDK itself.  see the virtual/target-chromium-os-sdk package.

-mike

[Hirokazu Honda]

Ah, I misunderstand what you said.
Adding npm to sdk is needed in order to use npm when building the
package in sysroot.
Concretely, net-libs/nodejs is added to RDEPEND in
virtual/target-chromium-os-sdk.
I don't know this is allowed though.

Apparently, although iojs is not related to this issue, I am willingly
going to update it as I said above.

[Mike Frysinger]

looks like nodejs is built from source rather than a binpkg.  that's what we'd want.

whether we can bundle it in the SDK by default comes down largely to the question of "how much disk space does this new package (and any new deps) add to the system?".

-mike

[Hirokazu Honda]

I measured the size before and after nodejs is added to ChromiumOS SDK
in the following way.
$ cros_sdk --delete && cros_sdk --enter
$ du -shb chroot
6518874919 chroot
$ # add net-libs/nodejs to ChromiumOS SDK
$ cros_sdk --delete && cros_sdk --enter
$ du -shb chroot
6558798401 chroot

I am not sure it is a right way though.
The growth is about 39Megabytes.
What do you think?

[Mike Frysinger]

if nodejs doesn't pull in anything new, you can just run `qsize nodejs` to get details

-mike

[Hirokazu Honda]

(cr) ((ea59b37...)) hiroh@hiroh ~/trunk/src/scripts $ qsize nodejs
net-libs/nodejs-6.9.1: 1,778 files, 581 non-files, 26,301.817 KiB

Got it.
It is about 27 Megabytes, according to qsize.

[Mike Frysinger]

i think that should be OK for the SDK
-mike

[beliefless dogmasless]

Not tested, but there is this:

http://blog.teamtreehouse.com/install-node-js-npm-linux

You install Linuxbrew, then after on Linuxbrew, you install npm