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Sync from SUSE:ALP:Source:Standard:1.0 qml-autoreqprov revision f5029d5f1941282bd508a109c7d8485a

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Adrian Schröter 2023-12-19 15:22:45 +01:00
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## Default LFS
*.7z filter=lfs diff=lfs merge=lfs -text
*.bsp filter=lfs diff=lfs merge=lfs -text
*.bz2 filter=lfs diff=lfs merge=lfs -text
*.gem filter=lfs diff=lfs merge=lfs -text
*.gz filter=lfs diff=lfs merge=lfs -text
*.jar filter=lfs diff=lfs merge=lfs -text
*.lz filter=lfs diff=lfs merge=lfs -text
*.lzma filter=lfs diff=lfs merge=lfs -text
*.obscpio filter=lfs diff=lfs merge=lfs -text
*.oxt filter=lfs diff=lfs merge=lfs -text
*.pdf filter=lfs diff=lfs merge=lfs -text
*.png filter=lfs diff=lfs merge=lfs -text
*.rpm filter=lfs diff=lfs merge=lfs -text
*.tbz filter=lfs diff=lfs merge=lfs -text
*.tbz2 filter=lfs diff=lfs merge=lfs -text
*.tgz filter=lfs diff=lfs merge=lfs -text
*.ttf filter=lfs diff=lfs merge=lfs -text
*.txz filter=lfs diff=lfs merge=lfs -text
*.whl filter=lfs diff=lfs merge=lfs -text
*.xz filter=lfs diff=lfs merge=lfs -text
*.zip filter=lfs diff=lfs merge=lfs -text
*.zst filter=lfs diff=lfs merge=lfs -text

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This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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qml-autoreqprov - Automatic generation of Provides and Requires for QML imports
======
QML is a user interface specification and programming language. Each QML file
can have import statements at the top, which can either reference files or
directories directly or modules by identifier and version (major.minor).
If any of those import statements can't be satisfied, loading fails. For imports
which are provided by other packages, this maps naturally to Requires statements
in RPM packages, which enforce that all imports are satisfied on package
installation.
Direct file/directory imports are ignored here, as those are usually contained
within a single package and thus not relevant for inter-package dependencies.
TLDR for packagers
------------------
Packages with system-wide QML modules get Provides like
`qt5qmlimport(QtQuick.Controls.2) = 15` automatically. Imports in .qml files
map to RPM requires like `qt5qmlimport(QtQuick.Controls.2) >= 15`. This can be
disabled with `%global %_disable_qml_requires 1` in .spec files. It's important
to check that all dependendencies are fulfilled, as in some cases a needed
`qmlimport` Provides is missing. See the "Internal and private exports" section
for how to deal with that.
How the QML engine imports modules
----------------------------------
For each module import, the QML engine looks into the import cache to find any
suitable export with identical identifier and major version and same/higher
minor version. If there is no match, it goes through the QML import path (with
a system-wide default) in order with the module identifier and version appended
in various ways and reads the qmldir file inside. If the qmldir file mentions
plugins, those are loaded and it can register the exported types. If the import
can't be satisfied (due to a version mismatch), the search continues.
Mapping to RPM capabilities
---------------------------
The goal is that all imports for .qml files within a package are satisfied by
RPM dependencies of that package. This is achieved by adding Provides to
packages which satisfy a specific module import and Requires to the packages
with QML files inside. The capability has to include both the full module
identifier and version. As modules with a different major version are pretty
much independent, the major version is part of the capabilities' name and the
minor version is used as the capabilities' version. Additionally, the system
import paths are specific to a Qt major version, this is also included. The
end result are QML modules providing capabilities like:
`Provides: qt5qmlimport(QtQuick.Controls.2) = 15`
On the import side, packages with QML files get requirements like:
`Requires: qt5qmlimport(QtQuick.Controls.2) >= 13`
for a statement like `import QtQuick.Controls 2.13`. The `>=` is there so that
modules with a higher minor version satisfy it as well.
With Qt 6, unversioned QML import statements got introduced which import the
highest available major version (which IMO does not make sense...).
Representing those in RPM requires using separate unversioned capabilities
alongside the versioned ones:
`Provides: qt6qmlimport(QtQuick.Controls)`
`Requires: qt6qmlimport(QtQuick.Controls)`
Generating Requires from .qml files
-----------------------------------
As can be seen, mapping QML import statements to RPM requires is
straightforward, and even made easier by using the `qmlimportscanner` tool from
qtdeclarative combined with `jq` to convert its JSON output with some filtering
directly into the capabilities format for RPM.
There is one tricky part though: QML files are (intentionally) not tied to any
specific version of Qt, while QML modules are (though the Qt version specific
import paths and binary plugins). So when generating the list of required
imports, those are tied to a specific Qt major version. Currently this is
automatically detected by looking at which versions of qmlimportscanner are
installed. If multiple versions are found, the requires scanner aborts. This
can be overwritten by setting a variable in the .spec file (unfortunately not
possible per subpackage):
`%global __qml_requires_opts --qtver 5`
Currently, only .qml files directly part of the package are handled, so if
those are part of a resources file embedded into an executable or library, they
will not be read. Making this possible needs more research and effort.
Generating Provides from qmldir files
-------------------------------------
Every module installed into the QML import path contains a `qmldir` file with
metainformation. They usually contain a `module` line which specifies the
identifier (those which don't are ignored) and a list of exports and plugins.
Just the module identifier is not enough to generate the capability, major and
corresponding minor version(s) are also needed. For each major version, only
the highest minor version is stored, as it also satisfies imports with a lower
minor version.
Handling direct exports are easy, as they mention the major and minor version
directly, which combined with the Qt version (derived from the location the
qmldir file is installed to) results in a capability. For plugins, it's not as
easy though, those actually have to be loaded to get their registrations.
While `qtdeclarative` provides a tool called `qmlplugindump`, which lists all
exported types in a QML format, it uses the QML engine for loading plugins,
which requires the module identifier and a version. In addition to that, it
just doesn't work at all sometimes and does not provide all necessary
information (like pure module exports, which just bump the available minor
version without exporting any new type revisions).
To get a list of all versioned exports made by a plugin, a new tool called
`qmlpluginexports` specifically for that was written. It uses private API to
load a plugin without specifying a version and then iterates through all known
types to get their versions. It also handles lazy registration using
QQmlModuleRegistration and qmlRegisterModule by implementing the underlying
modules, which overrides the symbols in the Qt libraries (symbols in
executables have higher priority than public symbols from shared objects) to
store the information and then forwarding the call to the Qt library.
As loading a plugin also triggers loading of all dependencies, it's possible
that those register their own exports as well. So only exports including the
module identifier from the `qmldir` file are used and others are ignored. For
instance, the plugin for `QtQuick.Controls.2` also registers
`QtQuick.Controls.impl.2`.
Internal and private exports
----------------------------
The automatic generation of import requirements uses every module import in
installed .qml files. In some cases, those imports are not for system-wide
modules, but for imports provided by code in shared libraries and executables,
usable only in .qml files loaded by those. Provides for those can't be
generated, but the requirement will be, which makes the package unsatisfiable
due to missing dependencies. How to deal with that depends on the export
itself.
RPM dependencies are inter-package, so if an export is only used within a
package (for instance, an application with its UI), it's fine to filter it
out from requires and provides like this:
```
%global __requires_exclude (org.kde.private.kcms.kwin.effects)|(org.kde.kcms.kwinrules)
%global __provides_exclude (org.kde.private.kcms.kwin.effects)|(org.kde.kcms.kwinrules)
```
Truly private exports are usually not found by the generation of provided
capabilities, so the latter is normally not necessary.
The opposite case is when an application or library registers exports for use
by other packages (e.g. Plasma applets) which aren't available as system wide
QML imports. Those shouldn't simply be filtered out, as other packages actually
make use of it. Instead, the capability has to be provided manually, e.g.
```
Provides: qt5qmlimport(org.kde.plasma.configuration.2) = 0
Provides: qt5qmlimport(org.kde.plasma.plasmoid.2) = 0
```
qtdeclarative-imports-provides
------------------------------
The qml-autoreqprov scripts need qmlimportscanner from qtdeclarative to
generate Requires and for `qmldir` files with `plugin` lines `qmlpluginexports`
is required. The latter needs qtdeclarative to be built. This is a problem,
because qtdeclarative provides important exports, which have to be available as
RPM capabilities as well. Making qml-autoreqprov and its dependencies available
during build of qtdeclarative would cause a build cycle. To work around that,
a "stub" package installs qtdeclarative during build and runs the provides
generator for each relevant qtdeclarative package, to map the exports to the
corresponding package.
TODO
----
Is special treatment for baselibs.conf needed?
How do .qmlc files relate to this?
RPM doesn't seem to merge "foo >= 10" and "foo >= 11", so there are redundant
requirements generated. As the generator is run for each file separately, it's
not directly possible to work around that.

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-------------------------------------------------------------------
Tue Nov 14 23:57:17 UTC 2023 - Fabian Vogt <fabian@ritter-vogt.de>
- Bump version to 1.3
- qml.req:
* Use qtpaths instead of qmake
* Generate requirements for unversioned imports
- qmldirreqprov.sh:
* Generate provides and requirements for unversioned imports
- README.md: Fix typo
-------------------------------------------------------------------
Tue Jul 11 09:04:16 UTC 2023 - Fabian Vogt <fabian@ritter-vogt.de>
- Bump version to 1.2
- qmldirreqprov.sh:
* Fix parsing of "depends"
* Add support for "optional plugin"
- qml.req: Handle imports without minor version requirement
-------------------------------------------------------------------
Tue Oct 19 18:45:25 UTC 2021 - Fabian Vogt <fabian@ritter-vogt.de>
- Check for a Qt runtime directory instead of qmake to also work if
no development packages are installed
-------------------------------------------------------------------
Tue Oct 5 10:48:58 UTC 2021 - Christophe Giboudeaux <christophe@krop.fr>
- Update qml.req for Qt 6.2. qmlimportscanner is now installed in
%_qt6_libexecdir and has no symlink in /usr/bin. qmake will be
queried to find the install dir.
-------------------------------------------------------------------
Wed Jan 27 08:54:39 UTC 2021 - Fabian Vogt <fabian@ritter-vogt.de>
- Convert the opt-in for qml.req to an opt-out
-------------------------------------------------------------------
Fri Jan 15 15:40:18 UTC 2021 - Fabian Vogt <fabian@ritter-vogt.de>
- Add a missing { to fix the relative plugin path case
-------------------------------------------------------------------
Fri Sep 8 18:19:17 UTC 2017 - fabian@ritter-vogt.de
- Initial experiments

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#
# spec file for package qml-autoreqprov
#
# Copyright (c) 2023 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.
# Please submit bugfixes or comments via https://bugs.opensuse.org/
#
Name: qml-autoreqprov
Version: 1.3
Release: 0
Summary: Automatic dependency generator for QML files and modules
License: GPL-3.0-or-later
Group: Development/Tools/Building
URL: http://www.opensuse.org
Source0: LICENSE
Source1: qml.attr
Source2: qml.req
Source3: qmldir.attr
Source4: qmldirreqprov.sh
Source5: README
Requires: jq
Requires: rpm
BuildArch: noarch
Requires: (libqt5-qtdeclarative-tools if libQtQuick5)
Requires: (qmlpluginexports-qt5 if libqt5-qtdeclarative-devel)
Requires: (qmlpluginexports-qt6 if qt6-qml-devel)
Requires: (qt6-base-common-devel if libQt6Qml6)
Requires: (qt6-declarative-tools if libQt6Qml6)
# Version 1.1 is not compatible with qt6-declarative < 6.2
Conflicts: qt6-declarative-tools < 6.2.0
%description
Automatic dependency generator for QML files and modules.
If installed, rpm uses this to generate Requires of .qml files
and Provides of QML modules.
%prep
cp %{SOURCE0} .
cp %{SOURCE5} .
%build
%install
install -D -m 644 %{SOURCE1} %{buildroot}%{_rpmconfigdir}/fileattrs/qml.attr
install -D -m 755 %{SOURCE2} %{buildroot}%{_rpmconfigdir}/qml.req
install -D -m 644 %{SOURCE3} %{buildroot}%{_rpmconfigdir}/fileattrs/qmldir.attr
install -D -m 755 %{SOURCE4} %{buildroot}%{_rpmconfigdir}/qmldirreqprov.sh
%files
%license LICENSE
%doc README
%{_rpmconfigdir}/fileattrs/qml.attr
%{_rpmconfigdir}/fileattrs/qmldir.attr
%{_rpmconfigdir}/qml.req
%{_rpmconfigdir}/qmldirreqprov.sh
%changelog

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%__qml_requires %{_rpmconfigdir}/qml.req
%__qml_path \\.qml$
# Exclude everything if _disable_qml_requires is set
%__qml_exclude_path %nil%{?_disable_qml_requires:\\.qml$}

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#!/bin/bash
# SPDX-FileCopyrightText: 2020-2023 Fabian Vogt <fabian@ritter-vogt.de>
# SPDX-License-Identifier: GPL-3.0-or-later
set -euo pipefail
qtvers=
ret=0
while [ $# -gt 0 ]; do
case $1 in
--qtver)
qtvers=$2
shift
;;
*)
echo "Unknown argument $1" >&2
exit 1
esac
shift
done
# Guess Qt version
qtver=
[[ -n ${qtvers} ]] || qtvers="5 6 7"
for ver in ${qtvers}; do
stat /usr/lib*/qt${ver} &>/dev/null && qtver="${qtver}${ver}"
done
# Zero or more than one version of Qt found. Abort.
if [[ ${#qtver} -ne 1 ]]; then
echo "Failed to guess Qt version!" >&2
exit 1
fi
if [[ ${qtver} == 5 ]]; then
importscanner="qmlimportscanner-qt5"
else
importscanner="$(qtpaths${qtver} --qt-query QT_HOST_LIBEXECS)/qmlimportscanner"
fi
command -v "${importscanner}" &>/dev/null || echo "Failed to locate qmlimportscanner"
declare -A dependencies
# foundDependency Module.Uri 42 69
# In the dependencies array, it sets the version of qt5qmlimport(Module.Uri.42) to 69, if lower.
foundDependency() {
uri="$1.$2"
if [ ${dependencies[$uri]:=0} -lt $3 ]; then
dependencies[$uri]=$3
fi
}
# TODO: Get exit status of qmlimportscanner
while read import version; do
if [ -z "$version" ]; then
dependencies[$import]=0
continue
fi
maj="${version%.*}"
min="${version#*.}"
# For imports without minor version like "import org.kde.kirigami 2",
# the minor version is reported as 255. Treat that as 0 instead.
if [ "$min" = 255 ]; then
min=0
fi
foundDependency "$import" "$maj" "$min"
done < <(grep -vE '/designer/.*\.qml' | xargs -r "$importscanner" -qmlFiles | jq -r '.[] | select(.type == "module") | .name + " " + .version')
for export in "${!dependencies[@]}"; do
ver="${dependencies["$export"]}"
if [ "$ver" != 0 ]; then
echo "qt${qtver}qmlimport(${export}) >= ${ver}"
else
echo "qt${qtver}qmlimport(${export})"
fi
done
exit $ret

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%__qmldir_provides %{_rpmconfigdir}/qmldirreqprov.sh --provides
%__qmldir_requires %{_rpmconfigdir}/qmldirreqprov.sh --requires
%__qmldir_path /qmldir$

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#!/bin/bash
# SPDX-FileCopyrightText: 2020-2023 Fabian Vogt <fabian@ritter-vogt.de>
# SPDX-License-Identifier: GPL-3.0-or-later
set -euo pipefail
provides=
requires=
ret=0
while [ $# -gt 0 ]; do
case $1 in
--provides)
provides=1
;;
--requires)
requires=1
;;
*)
echo "Unknown argument $1" >&2
exit 1
esac
shift
done
declare -A moduleExports
# foundModuleExport Module.Uri.42 69
# In the moduleExports array, it sets the version of Module.Uri.42 to 69, if lower
foundModuleExport() {
if [ ${moduleExports[$1]:=0} -lt $2 ]; then
moduleExports[$1]=$2
fi
}
# Hack: We have to load .so files which need libraries inside the build root
if ! [[ -z "${RPM_BUILD_ROOT:-}" ]]; then
for path in /{,usr/}lib{,64}; do
export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:${RPM_BUILD_ROOT}${path}"
done
fi
while read file; do
if ! [[ $file =~ /qt([5-9])/qml/.*/qmldir$ ]]; then
continue
fi
qtver=${BASH_REMATCH[1]}
dir="$(dirname "${file}")"
module="$(awk '/^module/ { print $2; exit }' "$file")"
if [[ -z "${module}" ]]; then
echo "$file has no module declaration - ignoring" >&2
continue
fi
if [[ $requires ]]; then
gawk '$1 != "depends" { next } $3 == "auto" { printf "qt'${qtver}'qmlimport(%s)\n", $2; }
match($3, /^([0-9]+)\.([0-9]+)$/, ver) { printf "qt'${qtver}'qmlimport(%s.%d) >= %d\n", $2, ver[1], ver[2]; } ' "$file"
fi
if [[ $provides ]]; then
if [[ $qtver -ge 6 ]]; then
moduleExports["qt${qtver}qmlimport(${module})"]="" # Provides for unversioned imports
fi
# Handle regular (.qml, .js) exports
while read maj min; do
foundModuleExport "qt${qtver}qmlimport(${module}.${maj})" "$min"
done < <(gawk 'match($0, /(singleton )?[^ ] ([0-9]+)\.([0-9]+) [^ ]+\.(qml|js)$/, type) { printf "%d %d\n", type[2], type[3]; }' "$file")
# Handle plugins
plugins=()
while read pluginname location; do
if [[ -z $location ]]; then
location="$dir"
elif [[ $location == /* ]]; then
location="${RPM_BUILD_ROOT:-}/$location/"
else
location="${dir}/${location}/"
fi
plugins+=("${location}/${pluginname}")
done < <(awk '$1 == "plugin" { printf "lib%s.so %s\n", $2, $3; } $1 == "optional" && $2 == "plugin" { printf "lib%s.so %s\n", $3, $4; }' "$file")
if [ ${#plugins[@]} -eq 0 ]; then
# No plugins?
continue
fi
if ! command -v qmlpluginexports-qt${qtver} &>/dev/null; then
echo "Module uses plugin, but qmlpluginexports-qt${qtver} not installed!" >&2
ret=1
continue
fi
for plugin in "${plugins[@]}"; do
# TODO: Get exit status of qmlpluginexports
while read import min; do
if [[ $import != *${module}* ]]; then
echo "Ignoring ${import}" >&2
continue
fi
foundModuleExport "qt${qtver}qmlimport(${import})" "$min"
done < <(qmlpluginexports-qt${qtver} "$plugin" "$module")
done
fi
done
for export in "${!moduleExports[@]}"; do
ver="${moduleExports["$export"]}"
if [ -n "$ver" ]; then
echo "${export} = ${ver}"
else
echo "${export}"
fi
done
exit $ret