package: add package guidelines

just some general ideas and opinions i had wrt
how helium should ~ be packaged

Author: dumbmoron

package/README.md

@@ -0,0 +1,50 @@
+# Helium packaging guidelines
+
+This document provides guidelines for packagers creating Helium packages
+for various Linux distriutions and packaging systems. These guidelines
+aim to ensure consistency across different package formats while
+respecting distribution-specific conventions.
+
+## Installation
+- The installation prefix of Helium packages is not mandated by
+  upstream. Note that on FHS-compliant distributions, Chromium-based
+  browsers are typically installed into /opt or /usr/lib64.
+- The primary executable should be a symbolic link to
+  $prefix/helium-wrapper. On FHS-compliant distributions, it should
+  be installed into `/usr/bin` or `/usr/local/bin`.
+
+## Branding
+- The primary executable name should be `helium`.
+- The package name should be `helium` if available; `helium-browser`
+  is acceptable otherwise. If the packaging system uses reverse-DNS
+  notation as identifiers, the identifier should be `net.imput.helium`
+  (all lowercase).
+- If built from GitHub-hosted binaries, the package name should have a
+  `-bin` suffix.
+- If built from releases marked as "pre-release", the package name
+  should have a `-prerelease` (preferred), `-pre` or `-beta` suffix.
+- If installing the desktop file, it should be named `helium.desktop`
+   (or `net.imput.helium.desktop` on systems preferring reverse-DNS
+    naming).
+- If installing icons, the icon name should be `helium`
+  (or `net.imput.helium`).
+
+## Versioning
+- Package versions should match the upstream version number.
+- Package versions may include a package revision suffix (e.g. `-1` in
+  `0.8.7.1-1`) for the convenience of package development and
+  maintenance.
+
+## Tweaks
+- Packages should not add environment-specific flags by default,
+  such as enabling or disabling features via `--enable-features`
+  or `--disable-features`.
+- Packages should replace the `CHROME_VERSION_EXTRA` envvar with their
+  distribution name (e.g. `Arch Linux`) or method of distribution
+  (e.g. `rpm`) to assist with easier bug report handling.
+
+## Security
+- Packages MUST NOT add default arguments that weaken the security of
+  Helium, including but not limited to `--no-sandbox`.
+- Packagers are encouraged to provide MAC security profiles where
+  applicable for enhanced security.