libxul-dev not installable without major collateral damage

Binary package hint: libxul-dev

Hi,

I'm probably overlooking something, but:

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dannym@pyramid: gnash-0.7.2/> dpkg-buildpackage -us -uc -rfakeroot
dpkg-buildpackage: source package is gnash
dpkg-buildpackage: source version is 0.7.2-1~edgy1
dpkg-buildpackage: source changed by John Dong <email address hidden>
dpkg-buildpackage: host architecture i386
dpkg-buildpackage: source version without epoch 0.7.2-1~edgy1
dpkg-checkbuilddeps: Unmet build dependencies: libxul-dev | mozilla-dev libkonq4-dev
dpkg-buildpackage: Build dependencies/conflicts unsatisfied; aborting.
dpkg-buildpackage: (Use -d flag to override.)
|(3)
dannym@pyramid: gnash-0.7.2/> sudo bash
|(0)
root@pyramid:~/work/src/gnash/gnash-0.7.2# LC_ALL=C apt-get install libxul-dev
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.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  libxul-dev: Depends: libnss3-dev (= 1.8.0.5-4.2) but it is not going to be installed
              Depends: libnspr4-dev (= 1.8.0.5-4.2) but it is not going to be installed
              Depends: libmozjs-dev (= 1.8.0.5-4.2) but it is not going to be installed
|(100)
root@pyramid:~/work/src/gnash/gnash-0.7.2# LC_ALL=C apt-get install libnss3-dev
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.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  libnss3-dev: Depends: libnspr4-dev (= 1.8.0.5-4.2) but it is not going to be installed
E: Broken packages
|(100)
root@pyramid:~/work/src/gnash/gnash-0.7.2# LC_ALL=C apt-get install libnss3-dev libnspr4-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libcamel1.2-8 liferea-mozilla libnss3 libdevhelp-1-0 evolution-exchange evolution libnss-dev
  firefox bug-buddy firefox-gnome-support gnome-app-install libebook1.2-5 libebook1.2-9
  evolution-plugins libnspr4 libedataserverui1.2-6 libedataserverui1.2-8 libnspr-dev
  contact-lookup-applet libedata-book1.2-2 evolution-data-server libedataserver1.2-4 yelp liferea
  mozilla-mplayer mozilla-firefox-locale-en-gb devhelp nautilus-sendto
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  libnspr4-0d libnss3-0d
The following packages will be REMOVED:
  bug-buddy contact-lookup-applet devhelp evolution evolution-data-server evolution-exchange
  evolution-plugins firefox firefox-gnome-support gnome-app-install libcamel1.2-8 libdevhelp-1-0
  libebook1.2-5 libebook1.2-9 libedata-book1.2-2 libedataserver1.2-4 libedataserverui1.2-6
  libedataserverui1.2-8 libnspr-dev libnspr4 libnss-dev libnss3 liferea liferea-mozilla
  mozilla-firefox-locale-en-gb mozilla-mplayer nautilus-sendto yelp
The following NEW packages will be installed:
  libnspr4-0d libnspr4-dev libnss3-0d libnss3-dev
0 upgraded, 4 newly installed, 28 to remove and 122 not upgraded.
Need to get 1242kB of archives.
After unpacking 90.3MB disk space will be freed.
Do you want to continue [Y/n]?
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I'd rather not have it deinstall firefox just so I can build gnash, at least :(