/usr/share/pyshared/trytond/modules/product_cost_fifo/ is in tryton-modules-product-cost-fifo 2.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/trytond/modules/product_cost_fifo/__init__.py
/usr/share/pyshared/trytond/modules/product_cost_fifo/__tryton__.py
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/bg_BG.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/cs_CZ.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/de_DE.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/es_CO.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/es_ES.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/fr_FR.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/nl_NL.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/locale/ru_RU.po
/usr/share/pyshared/trytond/modules/product_cost_fifo/move.py
/usr/share/pyshared/trytond/modules/product_cost_fifo/product.py