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# megasync-bin SlackBuild — Design
Date: 2026-07-06
Package: `megasync-bin`
Target: personal SBo-compatible repo (not SBo submission — binary repack)
Arch: x86_64 only (upstream ships no 32-bit)
## Goal
Package MEGA's official desktop client (MEGAsync) for Slackware by repacking
the upstream prebuilt Debian package, plus the dolphin and thunar file-manager
integration plugins, into a single Slackware package.
Building from source is impractical: upstream uses CMake + Qt5.15 + a MEGA SDK
git submodule + Microsoft vcpkg, which fetches and compiles ~30 deps at build
time (network-heavy, offline-illegal, hours-long Qt/C++ compile). MEGA ships
prebuilt binaries for deb/rpm distros; the binary links against system Qt5 and
bundles its own ffmpeg, so it drops cleanly onto stock Slackware.
## Naming
- `PRGNAM=megasync-bin` — avoids clash with the old SBo source `megasync`
(SBo still has 4.5.3.0, last touched 2021). The `-bin` suffix follows the
repo's existing pattern (claude-code-bin, kitty-bin, opencode-bin).
- Installed binary stays `/usr/bin/megasync` (upstream name preserved).
## Source
Versionless Debian 13 URLs (always serve latest; MD5SUM drifts by design,
re-checksum on nvchecker alert):
```
https://mega.nz/linux/repo/Debian_13/amd64/megasync-Debian_13_amd64.deb
https://mega.nz/linux/repo/Debian_13/amd64/dolphin-megasync-Debian_13_amd64.deb
https://mega.nz/linux/repo/Debian_13/amd64/thunar-megasync-Debian_13_amd64.deb
```
`.info` DOWNLOAD lists all three (space/backslash-separated), with three
matching MD5SUM entries in the same order. Current checksums:
```
megasync-Debian_13_amd64.deb c2f596ea2043da9613104a47934957d8
dolphin-megasync-Debian_13_amd64.deb 0917cb242b0f388f1ab01f6d44b76891
thunar-megasync-Debian_13_amd64.deb 5270041c4b5b23990d522390fafa551e
```
VERSION = `6.4.0.2` (upstream release tag `v6.4.0.2_Linux`; the repo package
metadata calls it 6.4.0, the integration plugins lag at 6.2.0 — VERSION tracks
the main app).
## Dependencies
`REQUIRES=""`. Verified on stock Slackware (this machine, Qt5 5.15.19):
- Main binary: links system Qt5 (Core/Widgets/Quick/Gui/Qml/Network/Svg/DBus/
QuickWidgets/X11Extras), libxcb; bundles ffmpeg in `/opt/megasync/lib`
(RUNPATH). All QtQuick QML runtime modules present. `ldd` fully resolves.
- dolphin plugin: needs KF5 (libKF5ConfigCore/CoreAddons/KIOCore/KIOWidgets/
WidgetsAddons) — present in stock Slackware. Loads only when dolphin runs.
- thunar plugin: needs thunarx-3 + glib — present in stock Slackware. Loads
only when Thunar runs.
Plugins for an absent file manager are dead `.so` files: harmless, unused,
never loaded by megasync itself. So bundling all three in one package is safe
regardless of which file managers the user has installed.
## Package layout (from main deb, paths as-is unless noted)
```
/usr/bin/megasync
/usr/bin/mega-desktop-app-gfxworker
/opt/megasync/lib/libav*.so.* libsw*.so.* # bundled ffmpeg, keep RUNPATH
/usr/share/megasync/resources/*.rcc
/usr/share/applications/megasync.desktop # upstream ships it
/usr/share/icons/hicolor/**/apps/mega.png
/usr/share/icons/hicolor/scalable/status/*.svg
/usr/share/icons/ubuntu-mono-dark/status/24/*.svg
/etc/sysctl.d/99-megasync-inotify-limit.conf # ship as .new
/etc/udev/rules.d/99-megasync-udev.rules # ship as .new
```
Integration plugins — remap Debian multiarch libdir to Slackware `/usr/lib64`:
```
dolphin:
/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/overlayicon/megasync-overlay-plugin.so
/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kfileitemaction/megasync-plugin.so
-> /usr/lib64/qt5/plugins/kf5/...
/usr/share/icons/hicolor/**/emblems/mega-dolphin-*.png
thunar:
/usr/lib/x86_64-linux-gnu/thunarx-3/libMEGAShellExtThunar.so
-> /usr/lib64/thunarx-3/libMEGAShellExtThunar.so
```
## SlackBuild flow
1. Standard SBo header: set `PRGNAM=megasync-bin`, `SRCNAM=megasync`,
`VERSION`, `ARCH`/`SLKCFLAGS`/`LIBDIRSUFFIX` detection (x86_64 only —
`exit 1` on other arch).
2. Extract each of the three debs: `ar x <deb>` then `tar xf data.tar.*`
into `$PKG` (or a staging dir then copy). Debs have no versioned top dir.
3. Relocate integration plugin `.so` files from
`usr/lib/x86_64-linux-gnu/` to `usr/lib${LIBDIRSUFFIX}/`.
4. Rename the two `/etc` config files to `.new`.
5. Strip binaries and bundled libs (upstream does not discourage it).
Preserve the `/opt/megasync/lib` RUNPATH on the main binary.
6. Install docs to `/usr/doc/$PRGNAM-$VERSION/` (README, plus upstream
copyright). Drop the Debian `changelog.Debian.gz` and `copyright`
from `/usr/share/doc/megasync`.
7. `slack-desc` (11-line), `$PKG/install/slack-desc`.
8. `find -L . ... chown/chmod` cleanup block.
9. `makepkg -l y -c n`.
## Repo integration
- `nvchecker.toml`: track the GitHub release tag.
The latest release is tagged `v6.4.0.2_Linux`; use `use_latest_release`
(not `use_max_tag` — MEGAsync's tag set includes old non-Linux tags that
sort wrong), then strip the `v` prefix and `_Linux` suffix:
```toml
[megasync-bin]
source = "github"
github = "meganz/MEGAsync"
use_latest_release = true
prefix = "v"
from_pattern = '_Linux$'
to_pattern = ''
```
Verified: resolves to `6.4.0.2`.
- README version table: add a `megasync-bin` row.
## Testing
1. `sbolint` clean.
2. `sbodl` verifies all three MD5SUMs (will pass only until MEGA rebuilds).
3. Build with the SlackBuild; `sbopkglint` clean.
4. Install; run `megasync --version` / launch; confirm binary resolves
(`ldd`), tray app starts.
5. Confirmed against -current (VM) and 15.0 as usual.
## Known gotchas
- Versionless download URL means MD5SUM goes stale on every upstream
rebuild, not just version bumps. Expected for this `-bin`; re-checksum
when nvchecker flags a new tag.
- Integration plugins version-lag (6.2.0) behind the main app (6.4.0) in
upstream's repo; nothing we control.
- Not SBo-submittable (binary repack + versionless rolling source).
|
