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Date: Wed, 01 Feb 2023 14:21:50 +0100
Message-Id: <CQ79ANMILIMJ.EHNIIC517UF1@sumire>
From: "alice" <alice@ayaya.dev>
To: "Alexander Scherbatiy" <alexander.scherbatiy@bell-sw.com>,
 <~alpine/users@lists.alpinelinux.org>
Subject: Re: Font dependencies in Alpine Linux
References: <59c4dca8-5cd0-1a7f-043f-924448927ece@bell-sw.com>
 <CQ78DPVFZPDS.MM1J87Q3O1JU@sumire>
 <469f059e-969c-444b-6cd3-4b7646e63f77@bell-sw.com>
In-Reply-To: <469f059e-969c-444b-6cd3-4b7646e63f77@bell-sw.com>

On Wed Feb 1, 2023 at 2:12 PM CET, Alexander Scherbatiy wrote:
> On 2/1/23 15:38, alice wrote:
>
> > On Wed Feb 1, 2023 at 12:43 PM CET, Alexander Scherbatiy wrote:
> >> Hello,
> >>
> >> If I install dejavu fonts on systems ubuntu:20.04, fedora:35,
> >> opensuse/leap:15.4 in docker they do not install fontconfig and freety=
pe
> >> as dependencies.
> >>
> >> DejaVu fonts have dependencies on fontconfig and freetype libraries on
> >> Linux Alpine .
> >>
> >> ---------
> >>
> >> docker run -it alpine:3.17 ash
> >> / # apk update
> >> / # apk add font-dejavu
> >> (1/10) Installing libexpat (2.5.0-r0)
> >> (2/10) Installing brotli-libs (1.0.9-r9)
> >> (3/10) Installing libbz2 (1.0.8-r4)
> >> (4/10) Installing libpng (1.6.38-r0)
> >> (5/10) Installing freetype (2.12.1-r0)
> >> (6/10) Installing fontconfig (2.14.1-r0)
> >> (7/10) Installing encodings (1.0.6-r0)
> >> (8/10) Installing libfontenc (1.1.6-r0)
> >> (9/10) Installing mkfontscale (1.2.2-r1)
> >> (10/10) Installing font-dejavu (2.37-r3)
> >> Executing busybox-1.35.0-r29.trigger
> >> Executing fontconfig-2.14.1-r0.trigger
> >> Executing mkfontscale-1.2.2-r1.trigger
> >> OK: 28 MiB in 25 packages
> >> ---------
> >>
> >> The use case which I have is using a docker with Linux Alpine to
> >> generate reports with Java in headless mode.
> >> Java allows to use fonts on systems where the fontconfig is not
> >> installed by providing paths to fonts in <jdk>/lib/fontconfig.properti=
es
> >> file.
> >> Java also can be built with bundled freetype which is a subset of the
> >> full freetype library.
> > freetype is merely a dependency of fontconfig in this case
> >
> >>
> >> Is it necessary that fonts have dependencies on fontconfig and freetyp=
e
> >> libraries in Alpine Linux?
> > yes, as normally using the fonts generally requires it.
> >
> > i suppose it's not impossible to not depend on it paired with any fonts
> > directly, but strictly speaking there is generally no difference, excep=
t in
> > your special usecase. you'd probably say the same goes for mkfontscale?
>  =C2=A0 Yes. The general question is that fonts on Alpine Linux has more=
=20
> dependencies than fonts on other systems.
>  =C2=A0 For example, if I use ubuntu:20.04, dejavu fonts depend only on=
=20
> fonts-dejavu-core and fonts-dejavu-extra
>
>  =C2=A0---------
>  =C2=A0docker run -it ubuntu:20.04 bash
>  =C2=A0apt update
>  =C2=A0apt install fonts-dejavu
> Reading package lists... Done
> Building dependency tree
> Reading state information... Done
> The following additional packages will be installed:
>  =C2=A0 fonts-dejavu-core fonts-dejavu-extra
> The following NEW packages will be installed:
>  =C2=A0 fonts-dejavu fonts-dejavu-core fonts-dejavu-extra
> 0 upgraded, 3 newly installed, 0 to remove and 4 not upgraded.
> Need to get 2996 kB of archives.
> After this operation, 10.5 MB of additional disk space will be used.
> ---------
>
>
> The aim is to use a docker image with Java as small as possible.
>
> What is the right way to setup Alpine Linux docker with fonts and=20
> without additional dependencies for my use case?
> My be fonts can be just copied during docker image creation instead of=20
> just font installation from packages?

merely dropping the dependencies could be looked at by someone if they want=
ed,
i don't have the energy currently , but for your usecase:

- exactly that, just copy what you want.
- use:

$ apk add -t mkfontscale
$ apk add -t fontconfig
(note individual commands with nothing else)

this is a hack(!) that creates a virtual package with no dependencies with =
a
pkgver of the current date, so it will then uninstall the real ones that ex=
ist
(since the dependency is satisfied via name only, and this virtual has the
highest version). you end up with no dependencies.

>
> Thanks,
> Alexander.
>
> >
> >> Thanks,
> >> Alexander.