Mon, 02 Oct 2017 13:40:51 +0200 wenzelm tuned;
Mon, 02 Oct 2017 13:33:36 +0200 wenzelm sources_stamp refers to full sources;
Mon, 02 Oct 2017 11:43:17 +0200 wenzelm option -S for "isabelle build";
Sun, 01 Oct 2017 20:50:26 +0200 wenzelm persistent storage of imported_sources;
Sun, 01 Oct 2017 17:59:26 +0200 wenzelm cache sources: invoke SHA1.digest at most once;
Sun, 01 Oct 2017 16:56:47 +0200 wenzelm tuned;
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