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Is it possible to install the Portal 2 authoring tools without Portal 2 installed. Otherwise, would it be fool steam into thinking I have?

The reason I'm asking is that I have Portal 2 installed for mac. However I can also run Steam through wine, to play the games only available for windows. Now I want to install the Portal authoring tools on the wine steam, but Steam wants me to download Portal 2. Could I point Steam to my mac version or do I need PC version for it to work?

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I'll not post this as an answer as I haven't done the legwork, but: It is my understanding that the authoring tools require access to game assets (models, etc.) in order to function and that the only way to get these assets is to install the game. – Ben Blank Oct 17 '11 at 18:30
up vote 3 down vote accepted

If you have enough HD space you can just copy your portal 2 game folder from your pc onto your mac, at least it will save you the time downloading it :)

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Sorry, have you tried copying about a 5gb game to another computer, this answer only answers how to lose your time? – Bailey Rowland Jun 16 '13 at 11:06
5gb is nothing, stick in a usb3 pen drive, job done in under 20 mins, the question was how to do something, not how to do something fast. – PrivateSniper Jun 16 '13 at 21:40
under 2o minutes, roflmao, it takes me a hour. – Bailey Rowland Jun 17 '13 at 9:47
then perhaps you have usb1,2 or a slow/dying harddrive, regardless this is offtopic to the question, the question being how to do something and not how long something will take to do :) – PrivateSniper Jun 26 '13 at 19:21
OK. This will now end. – Bailey Rowland Jun 26 '13 at 21:50

Hammer and other Valve authoring tools require access to files in the game folder such as models, textures, and "gameinfo.txt" in order to not duplicate files and take up extra space. It may be possible to "trick" Steam into launching the tools, but they would crash instantly. You could backup your saves, uninstall the mac version of the game and install it on "Wine Steam". This would probably be the sensible thing to do.

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