# Lsst-dev “shared stack” updated following various tickets

**URL:** <https://www.rubin.community/t/lsst-dev-shared-stack-updated-following-various-tickets/4154>\
**Category:** Data Management\
**Created:** [May 17, 2020, 8:54pm UTC](https://www.rubin.community/t/lsst-dev-shared-stack-updated-following-various-tickets/4154 "2020-05-17T20:54:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![swinbank](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/swinbank/32/24_2.png) [@swinbank](https://www.rubin.community/u/swinbank)\
**Post date:** [May 17, 2020, 8:54pm UTC](https://www.rubin.community/t/lsst-dev-shared-stack-updated-following-various-tickets/4154/1 "2020-05-17T20:54:00Z")

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The “shared stack” on lsst-dev has been refreshed to incorporate changes to the underlying Conda environment captured on various tickets ([RFC-693](https://jira.lsstcorp.org/browse/RFC-693), [DM-24746](https://jira.lsstcorp.org/browse/DM-24746), [DM-24758](https://jira.lsstcorp.org/browse/DM-24758), [DM-24907](https://jira.lsstcorp.org/browse/DM-24907)). In addition, this updated version is stricter about only allowing Conda to install packages from the `conda-forge` channel, which should make dependency management in cloned environments simpler.

The new stack can be found at `/software/lsstsw/stack_20200515`. It currently provides weekly `w_2020_19` and later of lsst\_distrib and `w_2020_20` and later of lsst\_sims. It will be updated with new weeklies as they become available.

`/software/lsstsw/stack/` will always be symlink to the latest shared stack.

Refer to the [Developer Guide](https://developer.lsst.io/services/lsst-dev.html#lsst-dev-loadlsst) for further details.