1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
Implementation:
* Package contains source of another "guest" package. Host package
named "guest-pkg".
* Package contains "guest" package sources, but not upstream sources.
Upstream sources will be fetched using "uscan". After download
orig.tar integrity is checked with known SHA256 digest.
* Host package version (without debian revision) should match version
of guest package with debian revision.
* debian/watch file of a host package meant to be the same as
debian/watch of guest package for notifications about new upstream
versions.
* Installer is implemented as shell script optionally installed as APT
post-invoke handler.
* Before attempting to build and install guest package(s) APT
post-invoke handler check for broken packages using `apt-get check`
and abort on any problem.
* When "guest" package is built, its debian revision number is
changed by appending "~local" to clearly mark generated packages.
* During build of "guest" packages "host" package is injected to
Guest's Depends to make sure generated packages will be removed on
"host" package remove/purge.
* Some capabilities(7) are dropped before invocation of
`dpkg-buildpackage`.
* Host package uses debconf to confirm downloading and building with
user.
* If user choose to remove "guest" package automatic re-installation of
"guest" package(s) will be avoided.
* Upgrades are gracefully handled i.e. if host package have bundled
guest package with version higher than installed then it will be
built into package and upgraded (semi-)automatically, if prior user
decision allows it.
* To rebuild guest package on host package upgrade it is enough to
bump debian revision number of a guest package. Increment of debian
revision of host package will not rebuild guest.
This will work only if user confirmed installation of post-invoke
handler.
* `dpkg-reconfigure guest-pkg` may be used to build and install guest
packages. Otherwise guest package(s) may be built and installed
from APT post-invoke handler.
* Because DPKG database is still locked when host package is installed
the guest package can't be immediately built yet. On host package
upgrade guest package will be automatically built and upgraded from
APT post-invoke handler that is not yet available on first install
of a host package. Currently there is no known way to automatically
install guest package at the same time with its host. On first
install of a host package bullding and installation of guest package
will be delayed till next apt-get operation.
* Generated guest packages will be saved to "/usr/src/host-pkg" (but
deleted on purge of a host package).
|
