[isabelle-dev] Clarification on ISABELLE_OUTPUT env variable removal

Makarius makarius at sketis.net
Wed Jun 27 21:27:40 CEST 2018

On 25/06/18 06:45, Rafal Kolanski wrote:
> While looking at Isabelle 2018, we have noticed that the ISABELLE_OUTPUT
> environment variable functionality has been removed.

This refers to

changeset:   68219:c0341c0080e2
user:        wenzelm
date:        Sat May 19 15:45:45 2018 +0200
clarified store directories;
discontinued settings ISABELLE_PATH, ISABELLE_OUTPUT;

> A typical setting of ISABELLE_OUTPUT/ISABELLE_PATH we use here is:

This example already motivates the change: ISABELLE_OUTPUT and
ISABELLE_PATH were somehow duplicates, with subtle differences. Together
with the "system build mode" (option -s of "isabelle build", "isabelle
jedit" etc.) it has lead to an ill-defined situation.

I have now refined the change further in

changeset:   68523:ccacc84e0251
user:        wenzelm
date:        Wed Jun 27 20:31:22 2018 +0200
clarified settings -- avoid hard-wired directories;
tuned documentation;

I.e. you can use ISABELLE_HEAPS above.


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