Is there a way to set up a perforce workspace with client mappings to a specific revision of some elements?
E.g.:
//depot/... //localpath/...
//depot/external/...@117 //localpath/external/...
In that case the first line should map the whole depo to localpath, but the external subfolder should be mapped to revision 117 of the external depot folder.
I know that that syntax does not work, but is there a way to achieve this goal using only the client mappings?
No, it is not possible to map specific revisions (via label or date or other) of files.
The way how you could solve this is, is to branch off //depot/external/...@117
into a separate path and then map that path:
p4 integrate //depot/external/...@117 //depot/external_v117/... p4
submit
Then the clientview could be like:
//depot/... //yourclient/...
//depot/external_v117/... //yourclient/external/...
-//depot/external/... //yourclient/external/...
But as you might notice, the depot tree gets confusing very easily. So you should plan a structure like this in beforehand.