Re: [PATCH 1/2] meta: recipes-support shrink with preconfig instead of postproc

[Claudius Heine <claudius.heine.ext@siemens.com>]

Hi Henning,

On 23/07/2019 13.42, [ext] Henning Schild wrote:
> From: Henning Schild <henning.schild@siemens.com>
> 
> This adds two support packages to shrink an image and keep it small in
> case apt/dpkg will be used on the system later on.
> An alternative would be postprocess functions, they would be run-once
> and if the system continues to receive package updates new files will
> not be cleaned up.

I really like this solution for this issue. But we should probably 
remove the base-apt dependency on the apt cache first so that this does 
not break it.

Cheers,
Claudius


> 
> Signed-off-by: Henning Schild <henning.schild@siemens.com>
> ---
>   .../files/isar-disable-apt-cache                   |  3 +++
>   .../isar-disable-apt-cache_0.1.bb                  | 13 +++++++++++++
>   .../isar-exclude-docs/files/isar-exclude-docs      | 11 +++++++++++
>   .../isar-exclude-docs/files/postinst               |  7 +++++++
>   .../isar-exclude-docs/isar-exclude-docs_0.1.bb     | 14 ++++++++++++++
>   5 files changed, 48 insertions(+)
>   create mode 100644 meta/recipes-support/isar-disable-apt-cache/files/isar-disable-apt-cache
>   create mode 100644 meta/recipes-support/isar-disable-apt-cache/isar-disable-apt-cache_0.1.bb
>   create mode 100644 meta/recipes-support/isar-exclude-docs/files/isar-exclude-docs
>   create mode 100644 meta/recipes-support/isar-exclude-docs/files/postinst
>   create mode 100644 meta/recipes-support/isar-exclude-docs/isar-exclude-docs_0.1.bb
> 
> diff --git a/meta/recipes-support/isar-disable-apt-cache/files/isar-disable-apt-cache b/meta/recipes-support/isar-disable-apt-cache/files/isar-disable-apt-cache
> new file mode 100644
> index 0000000..ff10041
> --- /dev/null
> +++ b/meta/recipes-support/isar-disable-apt-cache/files/isar-disable-apt-cache
> @@ -0,0 +1,3 @@
> +DPkg::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };
> +APT::Update::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };
> +Dir::Cache::pkgcache ""; Dir::Cache::srcpkgcache "";
> diff --git a/meta/recipes-support/isar-disable-apt-cache/isar-disable-apt-cache_0.1.bb b/meta/recipes-support/isar-disable-apt-cache/isar-disable-apt-cache_0.1.bb
> new file mode 100644
> index 0000000..7dbd6ed
> --- /dev/null
> +++ b/meta/recipes-support/isar-disable-apt-cache/isar-disable-apt-cache_0.1.bb
> @@ -0,0 +1,13 @@
> +# This software is a part of ISAR.
> +inherit dpkg-raw
> +
> +DESCRIPTION = "Configuration to disable apt cache"
> +MAINTAINER = "isar-users <isar-users@googlegroups.com>"
> +
> +SRC_URI = "file://${PN}"
> +
> +do_install[cleandirs] += "${D}/etc/apt/apt.conf.d/"
> +
> +do_install() {
> +    install -v -m 644 "${WORKDIR}/${PN}" "${D}/etc/apt/apt.conf.d/99${PN}"
> +}
> diff --git a/meta/recipes-support/isar-exclude-docs/files/isar-exclude-docs b/meta/recipes-support/isar-exclude-docs/files/isar-exclude-docs
> new file mode 100644
> index 0000000..5bec626
> --- /dev/null
> +++ b/meta/recipes-support/isar-exclude-docs/files/isar-exclude-docs
> @@ -0,0 +1,11 @@
> +# Drop all man pages
> +path-exclude=/usr/share/man/*
> +
> +# Drop all documentation ...
> +path-exclude=/usr/share/doc/*
> +
> +# ... except copyright files ...
> +path-include=/usr/share/doc/*/copyright
> +
> +# ... and Debian changelogs
> +path-include=/usr/share/doc/*/changelog.Debian.*
> diff --git a/meta/recipes-support/isar-exclude-docs/files/postinst b/meta/recipes-support/isar-exclude-docs/files/postinst
> new file mode 100644
> index 0000000..f6c0d1b
> --- /dev/null
> +++ b/meta/recipes-support/isar-exclude-docs/files/postinst
> @@ -0,0 +1,7 @@
> +#!/bin/sh
> +# we need to do this once right after install, so we can install this at any
> +# time and do not need to be "the first" package
> +# what we delete needs to be in sync with the dpkg configuration we ship
> +
> +rm -rf /usr/share/man/*
> +find /usr/share/doc/ -type f ! -name "copyright" ! -name "changelog.Debian.*" -exec rm -rf {} \;
> diff --git a/meta/recipes-support/isar-exclude-docs/isar-exclude-docs_0.1.bb b/meta/recipes-support/isar-exclude-docs/isar-exclude-docs_0.1.bb
> new file mode 100644
> index 0000000..05c8953
> --- /dev/null
> +++ b/meta/recipes-support/isar-exclude-docs/isar-exclude-docs_0.1.bb
> @@ -0,0 +1,14 @@
> +# This software is a part of ISAR.
> +inherit dpkg-raw
> +
> +DESCRIPTION = "Configuration to exclude most documentation"
> +MAINTAINER = "isar-users <isar-users@googlegroups.com>"
> +
> +SRC_URI = "file://${PN} \
> +	   file://postinst"
> +
> +do_install[cleandirs] += "${D}/etc/dpkg/dpkg.conf.d/"
> +
> +do_install() {
> +    install -v -m 644 "${WORKDIR}/${PN}" "${D}/etc/dpkg/dpkg.conf.d/99${PN}"
> +}
> 

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