The present request is to add the languages Provençal (code prv) and Gascon (code gsc) to Babel, to allow easier usage of them in all Wikimedia projects, without any interference with Languedocian-based Occitan. Language boxes have been around on the French Wikipedia for Provençal since 2012 and for Gascon (although with the wrong code) since 2006, and it seems due time to make their use more widely possible.
The JSON for Provençal would be the following.
{ "@metadata": { "authors": [ "Yadönapya" ] }, "babel": "Enfourmacioun Babel sus l’{{GENDER:$1|usagié|usagiero|usagié}}", "babel-desc": "Apound la founcioun d’analiso sintassico <code>#babel</code> que permet la creacioun autoumatico d’uno coulouno de bouito d’usagié Babel, estènt poussible d’enclaure de moudèle loucau", "babel-url": "Project:Babel", "babel-footer-url": ":Catégorie:Babel - Usagié pèr lengo", "babel-autocreate-reason": "Creacioun automatico de la pajo di categourìo [[$1|Babel]].", "babel-autocreate-text-levels": "Lis usagié dins aquelo categourìo an marca qu’an lou nivèu $1 pèr la lengo $2.", "babel-autocreate-text-main": "Lis usagié dins aquelo categourìo an marca que counèisson (vo pas) la lengo $1.", "babel-0": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} [[$1|coumpren pas]] lou [[$2|$3]] (o ’mé forço peno).", "babel-1": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|mendro]] de [[$2|$3]].", "babel-2": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|mejano]] de [[$2|$3]].", "babel-3": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|nauto]] de [[$2|$3]].", "babel-4": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|$3]] quasimen coume sa [[$1|lengo meiralo]].", "babel-5": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|$3]] à-n-un nivèu [[$1|proufessiounau]].", "babel-N": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|$3]] coume [[$1|lengo meiralo]].", "babel-0-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} [[$1|coumpren pas]] lou [[$2|prouvençau]] (o ’mé forço peno).", "babel-1-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|mendro]] de [[$2|prouvençau]].", "babel-2-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|mejano]] de [[$2|prouvençau]].", "babel-3-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} a de couneissènço [[$1|nauto]] de [[$2|prouvençau]].", "babel-4-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|prouvençau]] quasimen coume sa [[$1|lengo meiralo]].", "babel-5-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|prouvençau]] à-n-un nivèu [[$1|proufessiounau]].", "babel-N-n": "{{GENDER:$4|Aquest usagié|Aquesto usagiero}} parlo [[$2|prouvençau]] coume [[$1|lengo meiralo]].", "babel-template": "Modèle:User $1", "babel-footer": "Usagié pèr lengo", "apihelp-query+babel-description": "Óuteni d’informacioun sus li lengo que counèis l’usagié", "apihelp-query+babel-summary": "Óuteni d’informacioun sus li lengo que counèis l’usagié", "apihelp-query+babel-param-user": "Usagié sus lou quau óuteni d’infourmacioun", "apihelp-query+babel-example-1": "Óuteni lis informacioun de Babel pèr l’usagié <kbd>Eisèmple</kbd>" }
As for Gascon, I do not speak it, so I cannot give a translated JSON. Maybe asking someone who speaks Gascon and is still actively contributing could make the translation possible.