# New to AiiDA. Question about loading specific pseudo families

**URL:** <https://aiida.discourse.group/t/new-to-aiida-question-about-loading-specific-pseudo-families/438>\
**Category:** New to AiiDA\
**Created:** [July 22, 2024, 9:30pm UTC](https://aiida.discourse.group/t/new-to-aiida-question-about-loading-specific-pseudo-families/438 "2024-07-22T21:30:17Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bruenningm](https://avatars.discourse-cdn.com/v4/letter/b/e0b2c6/32.png) [@bruenningm](https://aiida.discourse.group/u/bruenningm)\
**Post date:** [July 22, 2024, 9:30pm UTC](https://aiida.discourse.group/t/new-to-aiida-question-about-loading-specific-pseudo-families/438/1 "2024-07-22T21:30:18Z")

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I am trying to use a workflow that uses quantum espresso to produce band structure plots. I need to download a specific pseudo potential that is specified in the workflow (SSSP/1.2/PBEsol/efficiency) however when i run “aiida-pseudo install sssp” it only installs SSSP/1.1/PBE/efficiency and SSSP/1.3/PBE/efficiency. Is there a way I can specifically install the pseudopotential I need.

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**Author:** ![sphuber](https://yyz2.discourse-cdn.com/free1/user_avatar/aiida.discourse.group/sphuber/32/6_2.png) [@sphuber](https://aiida.discourse.group/u/sphuber)\
**Post date:** [July 23, 2024, 6:15am UTC](https://aiida.discourse.group/t/new-to-aiida-question-about-loading-specific-pseudo-families/438/2 "2024-07-23T06:15:07Z")

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You can use `aiida-pseudo install sssp --help` for help instructions. It should print something like:

```console
Usage: aiida-pseudo install sssp [OPTIONS]

  Install an SSSP configuration.

  The SSSP configuration will be automatically downloaded from the Materials
  Cloud Archive entry to create a new `SsspFamily`.

Options:
  -v, --version [1.0|1.1|1.2|1.3]
                                  Select the version of the installed
                                  configuration. [default: 1.3]
  -x, --functional [PBE|PBEsol] Select the functional of the installed
                                  configuration. [default: PBE]
  -p, --protocol [efficiency|precision]
                                  Select the protocol of the installed
                                  configuration. [default: efficiency]
  --download-only Only download the pseudopotential files to
                                  the current working directory, without
                                  installing the pseudopotential family.
  --from-download FILE Install the pseudpotential family from
                                  archive and metadata downloaded with the
                                  `--download-only` option.
  -t, --traceback Include the stacktrace if an exception is
                                  encountered.
  --verbosity [notset|debug|info|report|warning|error|critical]
                                  Set the verbosity of the output.
  -h, --help Show this message and exit.

```

So to install another version you could use

```auto
aiida-pseudo install sssp -v 1.2 -x PBESol -p efficiency

```

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<div class="post-metadata">

**Author:** ![bruenningm](https://avatars.discourse-cdn.com/v4/letter/b/e0b2c6/32.png) [@bruenningm](https://aiida.discourse.group/u/bruenningm)\
**Post date:** [July 23, 2024, 8:13pm UTC](https://aiida.discourse.group/t/new-to-aiida-question-about-loading-specific-pseudo-families/438/3 "2024-07-23T20:13:26Z")

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Thank you. This worked perfectly.