[postgis-tickets] [PostGIS] #5138: gitlab-ci failing on postgis-2.5

[PostGIS]

#5138: gitlab-ci failing on postgis-2.5
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 Reporter:  robe       |      Owner:  robe
     Type:  defect     |     Status:  new
 Priority:  blocker    |  Milestone:  PostGIS 2.5.6
Component:  buildbots  |    Version:  2.5.x
 Keywords:             |
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 Want to fix gitlab failure before releasing PostGIS 2.5

 Currently failing with:

 https://gitlab.com/postgis/postgis/-/jobs/2356534292

 {{{
 done;
 ---- Making all in liblwgeom
 make[1]: Entering directory '/builds/postgis/postgis/liblwgeom'
 yacc -p wkt_yy -o'lwin_wkt_parse.c' -d lwin_wkt_parse.y
 /bin/bash: yacc: command not found
 Makefile:214: recipe for target 'lwin_wkt_parse.h' failed
 make[1]: *** [lwin_wkt_parse.h] Error 127
 make[1]: Leaving directory '/builds/postgis/postgis/liblwgeom'
 GNUmakefile:16: recipe for target 'all' failed
 make: *** [all] Error 1
 Cleaning up project directory and file based variables
 }}}

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5138>
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