feat: initial standalone Met Éireann ion

Author: alysson-souza

.github/assets/example.png

@@ -0,0 +1,46 @@
+# SPDX-FileCopyrightText: 2026 Alysson Souza e Silva <alysson@ll9.com.br>
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+name: Arch build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: archlinux:latest
+
+    steps:
+      - name: Update system and install dependencies
+        run: |
+          pacman -Syu --noconfirm
+          pacman -S --noconfirm --needed \
+            base-devel \
+            cmake \
+            extra-cmake-modules \
+            git \
+            kcoreaddons \
+            kdeplasma-addons \
+            ki18n \
+            kio \
+            kunitconversion \
+            qt6-base \
+            qt6-declarative
+
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Configure
+        run: cmake -B build -S .
+
+      - name: Build
+        run: cmake --build build -j2
+
+      - name: Stage install
+        run: DESTDIR="$PWD/stage" cmake --install build

.github/workflows/arch-build.yml

@@ -0,0 +1,10 @@
+build/
+.cache/
+.idea/
+.vscode/
+*.swp
+*.user
+pkg/
+src/
+*.pkg.tar.*
+*.src.tar.*

.gitignore

@@ -0,0 +1,16 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: plasma-ion-meteireann
+Upstream-Contact: Alysson Souza e Silva <alysson@ll9.com.br>
+Source: https://github.com/alysson-souza/plasma-ion-meteireann
+
+Files: .github/workflows/arch-build.yml .gitignore .reuse/dep5 CMakeLists.txt PKGBUILD README.md NOTICE.met-eireann.txt src/CMakeLists.txt src/ion_meteireann.cpp src/ion_meteireann.h src/metadata.json include/plasmaweatherdata_export.h include/plasmaweatherion_export.h
+Copyright: 2026 Alysson Souza e Silva <alysson@ll9.com.br>
+License: GPL-2.0-or-later
+
+Files: include/ion.h
+Copyright: 2007-2009 Shawn Starr <shawn.starr@rogers.com>
+License: LGPL-2.0-or-later
+
+Files: include/currentday.h include/forecast.h include/futuredays.h include/lastday.h include/lastobservation.h include/locations.h include/metadata.h include/station.h include/warnings.h
+Copyright: 2025 Bohdan Onofriichuk <bogdan.onofriuchuk@gmail.com>
+License: GPL-2.0-or-later

.reuse/dep5

@@ -0,0 +1,41 @@
+# SPDX-FileCopyrightText: 2026 Alysson Souza e Silva <alysson@ll9.com.br>
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+cmake_minimum_required(VERSION 3.16)
+
+set(PROJECT_VERSION "0.1.0")
+project(plasma-ion-meteireann VERSION ${PROJECT_VERSION})
+
+set(QT_MIN_VERSION "6.10.0")
+set(KF6_MIN_VERSION "6.22.0")
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(ECM ${KF6_MIN_VERSION} REQUIRED NO_MODULE)
+set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
+
+include(KDEInstallDirs)
+include(KDECMakeSettings)
+include(KDECompilerSettings NO_POLICY_SCOPE)
+include(ECMQtDeclareLoggingCategory)
+include(FeatureSummary)
+
+find_package(Qt6 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS Core Qml)
+find_package(KF6 ${KF6_MIN_VERSION} REQUIRED COMPONENTS
+    CoreAddons
+    KIO
+    I18n
+    UnitConversion
+)
+
+find_library(PLASMAWEATHERION_LIBRARY NAMES plasmaweatherion REQUIRED)
+find_library(PLASMAWEATHERDATA_LIBRARY NAMES plasmaweatherdata REQUIRED)
+
+add_subdirectory(src)
+
+install(FILES
+    NOTICE.met-eireann.txt
+    DESTINATION ${KDE_INSTALL_DATADIR}/doc/${PROJECT_NAME}
+)
+
+feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)

CMakeLists.txt

@@ -0,0 +1,22 @@
+Met Éireann data notice
+=======================
+
+This project redisplays and derives forecast information from Met Éireann data.
+
+Source:
+https://www.met.ie/
+
+Open data information:
+https://www.met.ie/about-us/specialised-services/open-data
+
+Forecast API used by this project:
+http://openaccess.pf.api.met.ie/metno-wdb2ts/locationforecast
+
+Required attribution and disclaimer text should be reviewed against Met Éireann's
+current Open Data terms before redistribution. In particular, the Met Éireann
+Open Data page requires attribution to Met Éireann, source identification,
+licence information, a disclaimer of liability, and notice of modifications
+where applicable.
+
+This project modifies and reformats forecast data for use in the KDE Plasma
+weather widget.

LICENSES/GPL-2.0-or-later.txt

@@ -0,0 +1,37 @@
+# SPDX-FileCopyrightText: 2026 Alysson Souza e Silva <alysson@ll9.com.br>
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Maintainer: Alysson Souza e Silva <alysson@ll9.com.br>
+
+pkgname=plasma-ion-meteireann
+pkgver=0.1.0
+pkgrel=1
+pkgdesc="Met Éireann weather ion for the KDE Plasma weather widget"
+arch=('x86_64')
+license=('GPL-2.0-or-later' 'LGPL-2.0-or-later')
+depends=(
+  'gcc-libs'
+  'kcoreaddons'
+  'kdeplasma-addons'
+  'ki18n'
+  'kio'
+  'kunitconversion'
+  'qt6-base'
+  'qt6-declarative'
+)
+makedepends=(
+  'cmake'
+  'extra-cmake-modules'
+)
+
+build() {
+  cmake -B "${srcdir}/build" -S "${startdir}" \
+    -DCMAKE_BUILD_TYPE=None \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_INSTALL_LIBDIR=lib
+  cmake --build "${srcdir}/build"
+}
+
+package() {
+  DESTDIR="${pkgdir}" cmake --install "${srcdir}/build"
+}

LICENSES/LGPL-2.0-or-later.txt

@@ -0,0 +1,107 @@
+# plasma-ion-meteireann
+
+Standalone KDE Plasma weather provider for [Met Éireann](https://www.met.ie/), the Irish Meteorological Service.
+
+It adds a **Met Éireann** data source to the Plasma weather widget through the `plasma/weather_ions` plugin system.
+
+![Met Éireann provider in the Plasma weather widget](.github/assets/example.png)
+
+## Requirements
+
+### Runtime
+
+- Plasma 6 weather widget
+- `kdeplasma-addons`
+- Qt 6
+- KDE Frameworks 6
+
+The plugin uses the weather runtime libraries shipped by `kdeplasma-addons`:
+
+- `libplasmaweatherion.so`
+- `libplasmaweatherdata.so`
+
+### Build
+
+- CMake >= 3.16
+- Extra CMake Modules (ECM) >= 6.22
+- Qt 6 >= 6.10
+- KDE Frameworks 6 >= 6.22
+
+### Arch / CachyOS build dependencies
+
+```bash
+sudo pacman -S --needed cmake extra-cmake-modules qt6-base qt6-declarative \
+  kcoreaddons ki18n kio kunitconversion kdeplasma-addons
+```
+
+## Building
+
+```bash
+cmake -B build -S .
+cmake --build build
+```
+
+## Installing
+
+Arch / CachyOS with `yay` from a local checkout:
+
+```bash
+git clone https://github.com/alysson-souza/plasma-ion-meteireann.git
+cd plasma-ion-meteireann
+yay -Bi .
+```
+
+System-wide from a local build:
+
+```bash
+sudo cmake --install build
+```
+
+User-local:
+
+```bash
+cmake --install build --prefix ~/.local
+```
+
+If Plasma does not automatically discover a user-local install, make sure your session includes:
+
+```bash
+QT_PLUGIN_PATH=$HOME/.local/lib/qt6/plugins
+```
+
+and restart `plasmashell`.
+
+## Using it
+
+1. Open the Plasma weather widget configuration
+2. Type your location into the search field
+3. Select the result labeled with **`(Met Éireann)`**
+4. Click **Apply** or **OK**
+
+Location search is currently handled through Met Éireann website lookup endpoints.
+
+## Forecast data source
+
+Forecast data comes from Met Éireann's official Open Data weather forecast API:
+
+- `http://openaccess.pf.api.met.ie/metno-wdb2ts/locationforecast`
+
+## Met Éireann attribution
+
+This project redisplays Met Éireann data. For redistribution, review:
+
+- [NOTICE.met-eireann.txt](NOTICE.met-eireann.txt)
+- [Met Éireann Open Data](https://www.met.ie/about-us/specialised-services/open-data)
+
+## License
+
+This repository is mixed-license:
+
+- local project files are `GPL-2.0-or-later`
+- vendored `include/ion.h` is `LGPL-2.0-or-later`
+- vendored weather data headers in `include/` are `GPL-2.0-or-later`
+
+See:
+
+- [LICENSES/LGPL-2.0-or-later.txt](LICENSES/LGPL-2.0-or-later.txt)
+- [LICENSES/GPL-2.0-or-later.txt](LICENSES/GPL-2.0-or-later.txt)