Message-ID: <d78485b5-46c3-a67f-eb5f-326ef8dc3848@bell-sw.com>
Date: Wed, 1 Feb 2023 17:03:36 +0300
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.4.2
Subject: Re: Font dependencies in Alpine Linux
Content-Language: en-US
To: alice <alice@ayaya.dev>, ~alpine/users@lists.alpinelinux.org
References: <59c4dca8-5cd0-1a7f-043f-924448927ece@bell-sw.com>
 <CQ78DPVFZPDS.MM1J87Q3O1JU@sumire>
 <469f059e-969c-444b-6cd3-4b7646e63f77@bell-sw.com>
 <CQ79ANMILIMJ.EHNIIC517UF1@sumire>
From: Alexander Scherbatiy <alexander.scherbatiy@bell-sw.com>
In-Reply-To: <CQ79ANMILIMJ.EHNIIC517UF1@sumire>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit

On 2/1/23 16:21, alice wrote:
> 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 freetype
>>>> 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.properties
>>>> 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 freetype
>>>> 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, except in
>>> your special usecase. you'd probably say the same goes for mkfontscale?
>>     Yes. The general question is that fonts on Alpine Linux has more
>> dependencies than fonts on other systems.
>>     For example, if I use ubuntu:20.04, dejavu fonts depend only on
>> fonts-dejavu-core and fonts-dejavu-extra
>>
>>    ---------
>>    docker run -it ubuntu:20.04 bash
>>    apt update
>>    apt install fonts-dejavu
>> Reading package lists... Done
>> Building dependency tree
>> Reading state information... Done
>> The following additional packages will be installed:
>>     fonts-dejavu-core fonts-dejavu-extra
>> The following NEW packages will be installed:
>>     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
>> without additional dependencies for my use case?
>> My be fonts can be just copied during docker image creation instead of
>> just font installation from packages?
> merely dropping the dependencies could be looked at by someone if they wanted,
> 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 exist
> (since the dependency is satisfied via name only, and this virtual has the
> highest version). you end up with no dependencies.
   Thank you. This works for my case.

>
>> Thanks,
>> Alexander.
>>
>>>> Thanks,
>>>> Alexander.