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Packages expression syntax

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julien-b
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65 posts
Joined: March 2017
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Hi guys,

I've been trying to get expressions in packages working, but I've come to a dead end.

Here is a snippet of what I'm trying to do :

{
    "env": [
            {
            "MYPROJECT_PATH": 
                [
                    { "$houdini_dev == '0'" : "/global/path" },
                    { "$houdini_dev == '1'" : "/dev/path" }
                ]
            },
            {
            "TOOLS_PATH": "/my/other/path"
            }
           ]
}

In my houdini.env, I have a houdini_dev variable that I want to use to switch between the global project and a local project.
But this doesn't seem to work.
If I check the environment variables in Python once Houdini is loaded, I can see my houdini_dev variable, as well as TOOLS_PATH but MYPROJECT_PATH is not there.

What am I doing wrong here ?

Thanks a lot,

Julien
VFX Supervisor @ MPC London
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mabelzile
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397 posts
Joined: Feb. 2018
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houdini.env is processed after all packages have been loaded by Houdini. Your env vars should be set outside your houdini.env directly in your environment before launching Houdini.
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julien-b
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Joined: March 2017
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I see, thanks!

One thing I tried though what to put that houdini_env in the package itself, it didn't work either …

Problem is, I can't put it in my env.csh, but that's a problem I'll have to solve somewhere else …
VFX Supervisor @ MPC London
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mabelzile
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397 posts
Joined: Feb. 2018
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Sorry, I'm not sure to understand “One thing I tried though what to put that houdini_env in the package itself, it didn't work either …”

You could also consider package_path for dynamic package settings. Here's an interesting video about packages and package_path in particular.

https://learncreategame.com/techart/houdini-environment-setup/ [learncreategame.com]
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