[Pkg-javascript-devel] Bug#922831: Uninstallable build dependencies

[Sjoerd Simons]

Source: node-es6-promise
Version: 4.2.5-1
Severity: serious

On a buster docker image:
```
# apt-get build-dep node-es6-promise
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 builddeps:node-es6-promise : Depends: webpack but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
```

Reason is that there is a build-dep on both webpack and uglifyjs which
indirectly end up conflicting.

Seems that dropping the uglifyjs b-d still at least makes the package build

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'proposed-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: armhf

Kernel: Linux 4.19.0-2-amd64 (SMP w/32 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled