Having trouble adding local repository to remastered iso

[ryan <ryan.braun@ec.gc.ca>]

I am trying to add a local reprepro created repository containing some
custom debs along with all the deps that get hauled in with it.  I built
the repository by installing a stock 7.7,  then apt-getting all software
and retrieving the debs from /var/cache/apt/archives.

Fired up reprepro to build the repository (containing both i386 and amd64)
and reprepro chugs away and builds the repository without issues.

reprepro config
Origin: Wheezy 
Label: Wheezy install 
Codename: wheezy
Architectures: i386 amd64
Components: main
Description: Apt repository for Install

The repository relative to the root of the iso is at

/ads/apt/debian

test@textbox:/var/opt/wheezy/master/ads/apt$ tree
.
`-- debian
    |-- dists
    |   `-- wheezy
    |       |-- Release
    |       `-- main
    |           |-- binary-amd64
    |           |   |-- Packages
    |           |   |-- Packages.gz
    |           |   `-- Release
    |           `-- binary-i386
    |               |-- Packages
    |               |-- Packages.gz
    |               `-- Release
    `-- pool


Pertinent entries in my preseed are


d-i apt-setup/local0/repository string \
       file:/ads/apt/debian wheezy main
d-i debian-installer/allow_unauthenticated boolean true

Preseeded install works fine,  installs the base system,  but the
additional repository never gets configured properly,  resulting in the
additional software not getting installed.  But leaves a usable stock
system.

Installer logs when apt fails to find the files

Dec 12 03:08:32 debconf: --> GET apt-setup/use_mirror
Dec 12 03:08:32 debconf: <-- 0 false
Dec 12 03:08:32 debconf: --> PROGRESS SET 700
Dec 12 03:08:32 debconf: <-- 0 OK
Dec 12 03:08:32 apt-setup: warning: /usr/lib/apt-setup/generators/50mirror
returned error code 1; discarding output
Dec 12 03:08:32 debconf: --> PROGRESS SET 800
Dec 12 03:08:32 debconf: <-- 0 OK
Dec 12 03:08:32 debconf: --> PROGRESS INFO apt-setup/progress/local
Dec 12 03:08:32 debconf: <-- 0 OK
Dec 12 03:08:32 debconf: --> GET apt-setup/local0/repository
Dec 12 03:08:32 debconf: <-- 0 file:/ads/apt/debian wheezy main
Dec 12 03:08:32 debconf: --> GET apt-setup/local0/comment
Dec 12 03:08:32 debconf: <-- 10 apt-setup/local0/comment doesn't exist
Dec 12 03:08:32 debconf: --> GET apt-setup/local0/key
Dec 12 03:08:32 debconf: <-- 10 apt-setup/local0/key doesn't exist
Dec 12 03:08:32 debconf: --> GET apt-setup/local0/source
Dec 12 03:08:32 debconf: <-- 10 apt-setup/local0/source doesn't exist
....
Dec 12 03:08:33 in-target: Ign file: wheezy Release.gpg
Dec 12 03:08:33 debconf: --> PROGRESS SET 900
Dec 12 03:08:33 in-target: Ign file: wheezy Release
Dec 12 03:08:33 in-target: Err file: wheezy/main amd64 Packages
Dec 12 03:08:33 in-target:   File not found
Dec 12 03:08:33 in-target: Ign file: wheezy/main Translation-en_CA
Dec 12 03:08:33 in-target: Ign file: wheezy/main Translation-en
Dec 12 03:08:33 debconf: <-- 0 OK
Dec 12 03:08:33 in-target: W: Failed to fetch
file:/ads/apt/debian/dists/wheezy/main/binary-amd64/Packages  File not
found
Dec 12 03:08:33 in-target:
Dec 12 03:08:33 in-target: E: Some index files failed to download. They
have been ignored, or old ones used instead.

I've tried changing the apt-setup/local0/repository string to each of the
following and each time it fails to find the Packages file.

file:/media/cdrom/ads/apt...
file:/cdrom/ads/apt...

I know the repo does work,  after booting into the freshly installed
system and mounting the cdrom,  I can fix sources.list to point to
/media/cdrom/ads/apt/debian and apt will update and install all apps fine.

I had this working at one point with a simple repo using dpkg-scanpackages,
but once we had to install i386 and amd64,  started using reprepro to build
the repo.  So I'm assuming I've got some kind of syntax error/typo here.

Thanks

-- 
Ryan Braun
Defence Weather Services
Chief Information Officer Branch, Environment Canada
CIV: 204-833-2500x2824 CSN: 257-2824 FAX: 204-833-2558
E-Mail: Ryan.Braun@ec.gc.ca