Snap package for Pharo 6

Hi Everyone,

I’ve made a snap package for Pharo 6 which I think is far enough along
for some wider testing.

To get Pharo up and running on Ubuntu 16.04:

# Install Pharo
$ sudo snap install –edge pharo –classic
# If your system isn’t configured for threaded heartbeat:
$ sudo pharo.config
# Download the latest Pharo 6 image
$ pharo.getimage
# Go…
$ pharo.ui Pharo.image
# or:
$ pharo Pharo.image eval 4+3

To get a list of available commands:

$ snap info pharo

If you’re on Debian or Ubuntu 14.04 you’ll need to install snapd, see
https://snapcraft.io/docs/core/install

The VM is the threaded heartbeat, dated 201704101933.

The installation flags are:

–edge – The edge channel is for development versions.  It
progresses to beta, candidate and then stable.
–classic – Snap packages are normally sandboxed for security
reasons.  Since Pharo is a development environment
in which we want to be able to run any executable,
or load any library, it is installed with access to
the entire system (as the running user).

Why use snap packages?

– They include all dependencies.  In particular, for the 32 bit
versions, this means that it isn’t necessary to install all the 32 bit
architecture and associated dependencies.
– Including dependencies means that there shouldn’t be any problems with
incompatible library versions when upgrading.

Why not use snap packages?

– It’s a relatively new technology, with a number of rough edges.
– There may still be issues with its sandboxing that I haven’t
discovered yet.
– Please let me know of any others to be listed here.
– Because the package uses classic confinement, it isn’t
cross-distribution in practice (unfortunately).

If you don’t trust me to configure your system correctly (which requires
sudo):

– All the scripts that make up the sub-commands are visible, e.g.
pharo.config can be viewed at /snap/pharo/current/usr/bin/CONFIG

The packaging code is at: https://github.com/akgrant43/pharo-snap

I’m interested to know if people would like to see this eventually
become a supported package format.

Cheers,
Alistair

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