[Scons-users] Windows installer for SCons 3.0.1

[Steve Hill (Wireless)]

Thanks Bill.

I don’t think that virtualenv is going to work for us. As Mats said, we have different projects using different SCons versions and we have a switch over period between two versions of SCons for any given project, where multiple version are permitted. The standard script that implements this is:

#! /usr/bin/env python
import os, sys

# Define the list of allowed SCons versions, in priority order - with the preferred versions first
versions = [
    ("2.5.1", ""),
    ("3.0.1", ""),
    ]

forced = False

# The first argument maybe the specific version of SCons to use so check for that...
if len(sys.argv) > 1:
    for version, flags in versions:
        if sys.argv[1] == version:
            print "Forcing to SCons version", version
           forced = True
            versions = [
                    (version, flags)
                    ]
            del sys.argv[1]
            break

for version, flags in versions:
    batchFile = os.path.join(os.path.dirname(sys.executable), 'Scripts', 'scons-%s.bat' % version)
    if os.path.exists(batchFile):
        cmd = '\"%s\" %s ' % (batchFile, flags) + ' '.join(defaults + sys.argv[1:])
        sys.exit(os.system(cmd))
else:
    if forced:
        print "SCons version", versions[0][0], "is not installed"
    else:
        print "No supported version of SCons is installed"

This allows all the users to have multiple versions of SCons installed and each project will use the version that is to be used for that project – or fail if it is not currently installed. I’ll have to look at whether I can create a .zip file for each version of SCons 3.x.x that we end up using to allow multiple concurrent installations…

Thanks,

S.

From: Scons-users [mailto:scons-users-bounces at scons.org] On Behalf Of Bill Deegan
Sent: 11 June 2018 16:25
To: SCons users mailing list
Subject: Re: [Scons-users] Windows installer for SCons 3.0.1

Steve,

Downloads page updated.

-Bill

On Mon, Jun 11, 2018 at 8:14 AM, Mats Wichmann <mats at wichmann.us<mailto:mats at wichmann.us>> wrote:
On 06/11/2018 09:04 AM, Bill Deegan wrote:
> Steve,
>
> In that case, virtualenv is your friend
>
> virtualenv scons-#.#.#
> scons-#.#.#\scripts\activate.bat
> pip install -U pip
> pip install scons
>
> You can create one virtualenv per scons version.
>
> -Bill

my relatively rarely-used Windows setup has one py2+scons3 setup and one
 p3+scons3 setup, and this works well.

on the other hand, if the issue is different projects using different
scons versions, adding a local-install scons to the project could also
work.  that way you're sure to have the right one - have done that
experimentally and it seems to work fine too.


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