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annotate mercurial/requirements.py @ 45393:d7dcc75a3eae

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localrepo: move requirements constant to requirements module We now have a dedicated module for requirements constant, let's move the ones in localrepo there. Differential Revision: https://phab.mercurial-scm.org/D8918
author Pulkit Goyal <7895pulkit@gmail.com>
date Sat, 08 Aug 2020 16:37:59 +0530
parents 77b8588dd84e
children bd56597b2254
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1 # requirements.py - objects and functions related to repository requirements
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 # When narrowing is finalized and no longer subject to format changes,
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11 # we should move this to just "narrow" or similar.
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12 NARROW_REQUIREMENT = b'narrowhg-experimental'
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13
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14 # Enables sparse working directory usage
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15 SPARSE_REQUIREMENT = b'exp-sparse'
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16
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17 # Enables the internal phase which is used to hide changesets instead
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18 # of stripping them
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19 INTERNAL_PHASE_REQUIREMENT = b'internal-phase'
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20
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21 # Stores manifest in Tree structure
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22 TREEMANIFEST_REQUIREMENT = b'treemanifest'
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23
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24 # Increment the sub-version when the revlog v2 format changes to lock out old
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25 # clients.
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26 REVLOGV2_REQUIREMENT = b'exp-revlogv2.1'
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27
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28 # A repository with the sparserevlog feature will have delta chains that
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29 # can spread over a larger span. Sparse reading cuts these large spans into
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30 # pieces, so that each piece isn't too big.
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31 # Without the sparserevlog capability, reading from the repository could use
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32 # huge amounts of memory, because the whole span would be read at once,
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33 # including all the intermediate revisions that aren't pertinent for the chain.
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34 # This is why once a repository has enabled sparse-read, it becomes required.
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35 SPARSEREVLOG_REQUIREMENT = b'sparserevlog'
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36
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37 # A repository with the sidedataflag requirement will allow to store extra
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38 # information for revision without altering their original hashes.
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39 SIDEDATA_REQUIREMENT = b'exp-sidedata-flag'
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40
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41 # A repository with the the copies-sidedata-changeset requirement will store
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42 # copies related information in changeset's sidedata.
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43 COPIESSDC_REQUIREMENT = b'exp-copies-sidedata-changeset'
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44
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45 # The repository use persistent nodemap for the changelog and the manifest.
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46 NODEMAP_REQUIREMENT = b'persistent-nodemap'