The “shared stack” on lsst-dev has been updated to reflect the changes to the Conda environment described in RFC-584.
The new stack contains weeklies from w_2019_12 onwards. It is available at /software/lsstsw/stack_20190330.
The old stack contains weeklies from w_2018_41 to w_2019_12, as well as the v17_0 and v17_0_1 releases. It will no longer be updated. It is available at /software/lsstsw/stack_20181012.
The symbolic link /software/lsstsw/stack will always point to the most recent shared stack.
Refer to the Developer Guide for further details.