[oe] Problem with dependencies in packages

[Filip Zyzniewski]

Hi,

I think I have found a problem with versioned dependencies (or I don't
unserstand something).

I am trying to switch the jlime distribution from ipk to deb packages.
When debugging do_rootfs problems I stumbled upon this:

The following packages have unmet dependencies:
  libncursesw5: Depends: libtinfo5 (>= 5.7+20110115) but 5.7-r16 is to
be installed
E: Broken packages

The Depends line in deb package control file comes from
classes/package_deb.bbclass:do_package_deb():

rdepends = explode_deps(unicode(bb.data.getVar("RDEPENDS", localdata, 1) or ""))
[...]
ctrlfile.write(u"Depends: %s\n" % ", ".join(rdepends))


The dependency string comes from classes/package.bbclass:766:
dep = "%s (>= %s)" % (dep_pkg, ver_needed)

ver_needed comes (in case of ncurses) from .ver files in the build
tree, generated by the same function a bit earlier using pkgver
variable set in lines 657-661:

                pkgver = bb.data.getVar('PKGV_' + pkg, d, True)
                if not pkgver:
                        pkgver = bb.data.getVar('PV_' + pkg, d, True)
                if not pkgver:
                        pkgver = ver

and in ncurses_5.7.bb we have:

PATCHDATE = "20110115"
PKGV = "${PV}+${PATCHDATE}"


Isn't this an incosistency that ncurses_5.7-r16 depends on
libtinfo5_5.7+20110115 ? Shouldn't it depend on libtinfo5_5.7-r16?

What's the reason for this situation? Does opkg somehow compare these
versions in another way causing the problem to be invisible?

bye,
Filip Zyzniewski