diff --git a/generated/spellfiles.json b/generated/spellfiles.json
new file mode 100644
index 00000000..87f55ba8
--- /dev/null
+++ b/generated/spellfiles.json
@@ -0,0 +1,682 @@
+{
+  "af.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/af.latin1.spl",
+    "hash": "sha256-F0vSWpJKbVKx9i16CXtIGertv57GMAGwWvmBlWutgfQ="
+  },
+  "af.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/af.latin1.sug",
+    "hash": "sha256-jcIClpTRqpJyg9+16MbrGNr8o9ajR0dxLYjsK9iVKuM="
+  },
+  "af.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/af.utf-8.spl",
+    "hash": "sha256-gVM4JPr7AiXVsYSKjcbKfRpRz2HT00ZcHEFqkDOCrME="
+  },
+  "af.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/af.utf-8.sug",
+    "hash": "sha256-Jj4q91Z6BRJRc8QUxYjVqyVRnp1DciGDaiH1a/z0qvc="
+  },
+  "am.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/am.utf-8.spl",
+    "hash": "sha256-uz93f+dSypGFDwc3QnE6AvNSvokv2dMdRmGfrpgAAdE="
+  },
+  "bg.cp1251.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/bg.cp1251.spl",
+    "hash": "sha256-QWMnsEFEVCRuWjoKfNpWdpdo1spTS2RdX9bndo2RkYY="
+  },
+  "bg.cp1251.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/bg.cp1251.sug",
+    "hash": "sha256-ZQy0VugK35CgpWH/TcSd27EeZbHqLorKw/VPC4+Q1Zc="
+  },
+  "bg.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/bg.utf-8.spl",
+    "hash": "sha256-0IEedBf2+PNQBP0kgGiwp842C39axgBheuxHpr6VkHY="
+  },
+  "bg.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/bg.utf-8.sug",
+    "hash": "sha256-AAhsJvGbaMg44rglI9MYhE4PGOIEY2wyY4a0Mvkszgw="
+  },
+  "br.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/br.latin1.spl",
+    "hash": "sha256-tkuEx2bcVWkAkBv8/dBHrny5Z3pUSsU16pkaeH9Q1Y4="
+  },
+  "br.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/br.utf-8.spl",
+    "hash": "sha256-FzRoGv/P8tHydwGJXOyG6kQSY6ICMJ3LSvLL228DX0w="
+  },
+  "ca.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ca.latin1.spl",
+    "hash": "sha256-4y/1wGtCC3NYK8v2UACMhGKrdjTXuFQRLaaSRoCBuug="
+  },
+  "ca.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ca.latin1.sug",
+    "hash": "sha256-YA5rVlVTcppfBxLX0KkJjwh1OaQK4iLjNnEMiAjSFkU="
+  },
+  "ca.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ca.utf-8.spl",
+    "hash": "sha256-G6f+DaTvBgNmw2MA89dbWfWIPt4T2ZsUxRzIadG7gRE="
+  },
+  "ca.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ca.utf-8.sug",
+    "hash": "sha256-RvXgxgKqLBsgMQXAVZSGJ+GN0+cuu/HBwlTbuGLDHk4="
+  },
+  "cs.cp1250.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/cs.cp1250.spl",
+    "hash": "sha256-/OHfQvfi5fKgrjgBmEusrewJKkmQ9PRR+dSBoHyemRA="
+  },
+  "cs.iso-8859-2.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/cs.iso-8859-2.spl",
+    "hash": "sha256-1i7QoV1qyBsP1kna+VdmhGwkx1yK3GRkqHJ8ExuPhCI="
+  },
+  "cs.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/cs.utf-8.spl",
+    "hash": "sha256-vmcId4yx5DPWIYHccUpqgNZW4YhG4W52ofT16+IQ+4M="
+  },
+  "cy.iso-8859-14.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/cy.iso-8859-14.spl",
+    "hash": "sha256-ir+8YJAokrEN6t4peMnPVJg8PtvzbAQYLPlJZown9Ms="
+  },
+  "cy.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/cy.utf-8.spl",
+    "hash": "sha256-bq3PEmlTu9oYjlG0fVGMGMrhdkSbQXQIZet0Ykx7Y+Q="
+  },
+  "da.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/da.latin1.spl",
+    "hash": "sha256-HFpTgE2YQpYbIGHQvnLSQ4cdTvqnGZ76SbiN6d9iFMg="
+  },
+  "da.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/da.latin1.sug",
+    "hash": "sha256-ZhjpGdy+uUrQ9s+cGRz7PHdYoBKeVcyh3KT3M5PoGhs="
+  },
+  "da.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/da.utf-8.spl",
+    "hash": "sha256-kmorKLt1tRESopA8mLD1HfFvEMuDcvXugpH4Y2nAiTI="
+  },
+  "da.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/da.utf-8.sug",
+    "hash": "sha256-tbfPQEGlk+V3QMAXLkEhxe6uDAW40mx+MZT6gSG4tt0="
+  },
+  "de.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/de.latin1.spl",
+    "hash": "sha256-iedU+cMNolKlNP6aSzTeDV/72DlnuqWccb/yb/UAw0I="
+  },
+  "de.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/de.latin1.sug",
+    "hash": "sha256-lT+tH0Hx0ZnUhp8IdsPm26tlNyIl+LoT7dAho0A74Fc="
+  },
+  "de.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/de.utf-8.spl",
+    "hash": "sha256-c8cQfqM5hWzb6SHeuSpFk5xN5uucByYdobndGfaDo9E="
+  },
+  "de.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/de.utf-8.sug",
+    "hash": "sha256-E9Ds+Shj2J72DNSopesqWhOg6Pm6jRxqvkerqFcUqUg="
+  },
+  "el.iso-8859-7.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/el.iso-8859-7.spl",
+    "hash": "sha256-foUXQL9msjd8i+7r/qEQ1it70h6IzB4B40OTZdXsVWo="
+  },
+  "el.iso-8859-7.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/el.iso-8859-7.sug",
+    "hash": "sha256-w6uNonEMqjcTkqZJyBaIPMNxN0qoOO5BcZ2f8YR4Fx4="
+  },
+  "el.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/el.utf-8.spl",
+    "hash": "sha256-P93wqLJYoY7gW6VLb5gssADDs4iOo4Fn6RA8MjFx5Zc="
+  },
+  "el.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/el.utf-8.sug",
+    "hash": "sha256-Z1KlgBU0T+0Pb/9GZN/SdHq8kI4MtTfIvcmazzQPS5c="
+  },
+  "en.ascii.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.ascii.spl",
+    "hash": "sha256-zry6SJ1F2jNVlA80BYLiDONezc1E+cwWi+hz8I54JEk="
+  },
+  "en.ascii.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.ascii.sug",
+    "hash": "sha256-sNXQ7RlzX4NySO+XvMtEStcwNAsXhcj2qORFj2hyIWw="
+  },
+  "en.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.latin1.spl",
+    "hash": "sha256-Yg2e/Nec/J1jmBj7UoB+Pa5ho3yADWlKAQzVJaIWGEU="
+  },
+  "en.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.latin1.sug",
+    "hash": "sha256-5t6X5Lyz+bSq9+HrVKgbk5DVwjH0J/pL43mKJeRiKwI="
+  },
+  "en.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.utf-8.spl",
+    "hash": "sha256-/sq9yUm2o50ywImfolReqyXmPy7QozxK0VEUJjhNMHA="
+  },
+  "en.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/en.utf-8.sug",
+    "hash": "sha256-W25eYWVYLS/Xob+kH7zoJCxyR2IixV0XwqorqTPJMuw="
+  },
+  "eo.iso-8859-3.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/eo.iso-8859-3.spl",
+    "hash": "sha256-id7tmGQWmlh/yO4VSgH7PgjNJIr/xQH3kEA8uvDcU9w="
+  },
+  "eo.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/eo.utf-8.spl",
+    "hash": "sha256-KoFIh8eYDvXOLNzgogSBY2UgxGGj73UCMUQUwp50dN0="
+  },
+  "es.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/es.latin1.spl",
+    "hash": "sha256-B8MqkA9ceQ221VVldX6bYxQvpG5dWJmRZl9MD3KEFEE="
+  },
+  "es.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/es.latin1.sug",
+    "hash": "sha256-K6Vj3ym9HWFst7gR9q/DZdYOIEKhs0Fcdp7YQAf7Pks="
+  },
+  "es.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/es.utf-8.spl",
+    "hash": "sha256-ljY3rJJc+KUb8gf6w5LWtMaXlXEdzC1ICbeIRq42e+M="
+  },
+  "es.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/es.utf-8.sug",
+    "hash": "sha256-5w80eKplPCrpBQhjKPv/TkO9ZG12U0ZF9QplNEgBvWw="
+  },
+  "eu.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/eu.utf-8.spl",
+    "hash": "sha256-Uw/UFYZ0WnEQ20eJzZGLXC835tbCs1aEZPgG5btK6bc="
+  },
+  "fo.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fo.latin1.spl",
+    "hash": "sha256-nZsS+L5WSXXezCnNebv9TrtNLcXeYFcvReC1l7IBLjQ="
+  },
+  "fo.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fo.latin1.sug",
+    "hash": "sha256-BMJPqbrMmx8+D4rQNiqEgLNlJLoKBoPH11fsOkZN2cM="
+  },
+  "fo.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fo.utf-8.spl",
+    "hash": "sha256-eoGDhYBRZB1W0FBTSXKJXJ54M7bh0ahlSw7MmTvHvgQ="
+  },
+  "fo.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fo.utf-8.sug",
+    "hash": "sha256-enrNpiR/6F2Cz+VHffANonc5VslqalvrWMg1YIeMrEQ="
+  },
+  "fr.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fr.latin1.spl",
+    "hash": "sha256-CGzNoIkVlMk+qxQ6qD/7vSXQE8G4KGa7tIuxy3iMwv8="
+  },
+  "fr.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fr.latin1.sug",
+    "hash": "sha256-XLLJeQG5yoG/dlUyCZwDKeIiPBObqnZAWIIt69Lg0io="
+  },
+  "fr.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fr.utf-8.spl",
+    "hash": "sha256-q/uXArmNiHwXWs5Y8as5cz3AjQO2dNkU9WNE74bmO2E="
+  },
+  "fr.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/fr.utf-8.sug",
+    "hash": "sha256-ApS8MrQskLuyhqieI8o3c7fvUO/xq1I7FRPWolxrP1g="
+  },
+  "ga.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ga.latin1.spl",
+    "hash": "sha256-us2hS34mnyVrau5Bqj9H8hpsfWndxZlwpb/41FeNHZA="
+  },
+  "ga.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ga.latin1.sug",
+    "hash": "sha256-4kw9Qwzs0Z9IMzFGBuuFMsK4fuvQRCoLF2cgsbC16Bs="
+  },
+  "ga.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ga.utf-8.spl",
+    "hash": "sha256-aPjTPGDrC1hEl3yJ2ZqetZxrQEoEby5tkUAsJfU1mrA="
+  },
+  "ga.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/ga.utf-8.sug",
+    "hash": "sha256-bh2GUn7p1gYJWYGSr0Zo/zJV/+hwV2KhttgyE9A15Og="
+  },
+  "gd.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gd.latin1.spl",
+    "hash": "sha256-qCcge51Bq2KBtaZiZ2Wl4opQm/MFYLLyCHKYmkbl9pE="
+  },
+  "gd.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gd.latin1.sug",
+    "hash": "sha256-Ah1xjvJxlYW3hxKb/XMPG6+8buiyc9HrH3Rztx+QmrA="
+  },
+  "gd.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gd.utf-8.spl",
+    "hash": "sha256-w7GamDiQRBSRs8eJ23FxtWyFSvcH3HN6H9SORvVzook="
+  },
+  "gd.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gd.utf-8.sug",
+    "hash": "sha256-EXPHxy1RgF1eAPeOdkunfbUXpCzIfk4AvaSPMTi1XQY="
+  },
+  "gl.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gl.latin1.spl",
+    "hash": "sha256-fkegkQHcpPPBMLE+6L6KMm8HBH2dkg8qQxJ6loKANFI="
+  },
+  "gl.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gl.latin1.sug",
+    "hash": "sha256-k+jsUJDrk5jW5svJsJVpfWEuAS15iQSO+XmE9cL8XSg="
+  },
+  "gl.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gl.utf-8.spl",
+    "hash": "sha256-1F30HTIIVs82wnvvwLnIpBsxxnqWUigeybb5yEr72GQ="
+  },
+  "gl.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/gl.utf-8.sug",
+    "hash": "sha256-TIfKPDA9+tmZ2RbzhkBeJukqOQCm9zmxN8s1IzVMFWc="
+  },
+  "he.iso-8859-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/he.iso-8859-8.spl",
+    "hash": "sha256-fIpnvw2tY1Ncqve2cln4NEi3Ok07jWYVcUI81YuoiHw="
+  },
+  "he.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/he.utf-8.spl",
+    "hash": "sha256-G5H9V4yqbuLFneDtgrVyTKoGmlrGNQQOd+fy6A7fB4s="
+  },
+  "hr.cp1250.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hr.cp1250.spl",
+    "hash": "sha256-vxyWW5JMUCliISjxcJ+nOky+oZfkqCIX1ODNY5qvRtA="
+  },
+  "hr.iso-8859-2.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hr.iso-8859-2.spl",
+    "hash": "sha256-iXYU0cRqghk+vIh6+8qRpo5yel/A4STo3Ig82Xqmc/Q="
+  },
+  "hr.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hr.utf-8.spl",
+    "hash": "sha256-NuoT41YaT6zf8WEHlHiRpLLJcaHDCW8Wgfzuw1N9yZ8="
+  },
+  "hu.cp1250.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hu.cp1250.spl",
+    "hash": "sha256-aRvQMvHWMUXTY7jwIS+odgYt/An9VApsBS37N1W/Gfk="
+  },
+  "hu.iso-8859-2.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hu.iso-8859-2.spl",
+    "hash": "sha256-ad+s78InXni3luVAU7wUAwpIVvYgX2gNWxEMAGEdfxI="
+  },
+  "hu.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hu.latin1.spl",
+    "hash": "sha256-/tYjr4cUYnZ3l9nfs4elAvULQWF5RqEKj3u5/BeAfp8="
+  },
+  "hu.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/hu.utf-8.spl",
+    "hash": "sha256-sCzDO/aayrJNmviP1RTk5NCMKZXaW/LoiMw4MGJE/2g="
+  },
+  "id.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/id.latin1.spl",
+    "hash": "sha256-RkbNfH/UC5NVQ3p8X3R29j5q2NrLEgg2LBMODmN4njU="
+  },
+  "id.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/id.latin1.sug",
+    "hash": "sha256-ZJQb41y4JeZ27ZXxu4CwgmHYNfpm7xuCbRccFIjoLxE="
+  },
+  "id.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/id.utf-8.spl",
+    "hash": "sha256-cdZJLEegWW8xUjm9Xh0iGGcWbe92AwnIgDLuLyQF60s="
+  },
+  "id.utf-8.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/id.utf-8.sug",
+    "hash": "sha256-lCxB+1NsrlC052hIvyzqesN549LdJxt7SSwy0zFLtJg="
+  },
+  "it.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/it.latin1.spl",
+    "hash": "sha256-vyE34XqMsVSFCEuANYPGgTQJDi/8d5FT+7pq1bpzXRc="
+  },
+  "it.latin1.sug": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/it.latin1.sug",
+    "hash": "sha256-vTrvQQwYeJZdvaCuzhIxI1ooszK4GR4uJfpAOMnmmqw="
+  },
+  "it.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/it.utf-8.spl",
+    "hash": "sha256-2AczkD6DbVN5DAq4wcLyn2Y8oqd67ns4Guprh2KudBM="
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+  },
+  "uk.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/uk.utf-8.spl",
+    "hash": "sha256-4WhspKVNcGj+Zummkh87rSnMvxQEa/cEhZjL5uwHKBQ="
+  },
+  "yi.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/yi.latin1.spl",
+    "hash": "sha256-ewzM4qeHyDsDvmhCSNFN98GqKriwv/Z+xTbO3fLJyYU="
+  },
+  "yi-tr.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/yi-tr.utf-8.spl",
+    "hash": "sha256-xpghHoCxGUmlU579FEwZ2/SN+gVB7UGPNvayUGtGVxc="
+  },
+  "yi.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/yi.utf-8.spl",
+    "hash": "sha256-UXcPJC2iHCeSuvfCZxLagaroJ7XqY5jKL14uMVJWaq8="
+  },
+  "zu.ascii.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/zu.ascii.spl",
+    "hash": "sha256-LkAyI7Kg2lfrOS7oJ3rrNk9jcAhIxBAYAphnEpxlskk="
+  },
+  "zu.latin1.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/zu.latin1.spl",
+    "hash": "sha256-f47joVMctMHPtE5eeaQ/Z6b6oWINHc1a/znhgTqZ198="
+  },
+  "zu.utf-8.spl": {
+    "url": "https://ftp.nluug.nl/pub/vim/runtime/spell/zu.utf-8.spl",
+    "hash": "sha256-0rWXH2PV317VxSnbgU0m2zH9T+nHAuFIFee6dERH6pY="
+  }
+}
diff --git a/modules/default.nix b/modules/default.nix
index 49c2ddf6..fc1252c3 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -22,5 +22,6 @@
     ./output.nix
     ./performance.nix
     ./plugins.nix
+    ./spellfiles.nix
   ];
 }
diff --git a/modules/spellfiles.nix b/modules/spellfiles.nix
new file mode 100644
index 00000000..6f85dd46
--- /dev/null
+++ b/modules/spellfiles.nix
@@ -0,0 +1,184 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  inherit (lib) types;
+
+  spellfilesHashes = lib.importJSON ../generated/spellfiles.json;
+
+  availableSpellfiles = lib.attrNames spellfilesHashes;
+
+  # [ "foo<SEP>bar" "one<SEP>two<SEP>three" ] -> [ "foo" "one" ]
+  mapExtractBeforeSep = sep: map (x: builtins.head (builtins.split sep x));
+
+  availableLanguages = lib.pipe availableSpellfiles [
+    (mapExtractBeforeSep "\\.")
+    lib.unique
+  ];
+
+  cfg = config.spellfiles;
+in
+{
+  options.spellfiles = {
+    enable = lib.mkOption {
+      type = types.bool;
+      default = false;
+      example = true;
+      description = ''
+        Whether to automatically fetch and install vim spellfiles (`.spl` and `.sug`).
+
+        If enabled, Nixvim will automatically populate `spell/en.utf-8.spl`-type files by fetching
+        them from [the official vim FTP server](https://ftp.nluug.nl/pub/vim/runtime/spell/).
+
+        This module allows choosing which spellfiles to install.
+      '';
+    };
+
+    languages = lib.mkOption {
+      type = with types; either (enum [ "auto" ]) (listOf (enum availableLanguages));
+      default = "auto";
+      example = [
+        "en"
+        "fr"
+      ];
+      description = ''
+        By default, spellfiles from the languages listed in `opts.spelllang` will be fetched (or
+        `"en"` if `opts.spelllang` is not defined).
+
+        Set to `[ ]` to disable this behavior.
+      '';
+      apply =
+        value:
+        let
+          # If spelllang is not set, default to English
+          spelllang = config.opts.spelllang or "en";
+
+          /*
+            Infers the list of language ids from `opts.spelllang`:
+
+            Turns: "en_us,fr,de"
+            into: [ "en" "fr" "de" ]
+            # https://neovim.io/doc/user/spell.html#spell-load
+          */
+          languagesFromSpelllang = lib.pipe spelllang [
+            # "en_us,fr,de" -> [ "en_us" "fr" "de" ]
+            (lib.splitString ",")
+
+            # Remove region from language id ("en_us" -> "en")
+            # (map (lang: builtins.trace lang lib.head (builtins.match "^([^_]+)" lang)))
+            (mapExtractBeforeSep "_")
+
+            # Remove languages that do not have corresponding spellfiles (such as "medical")
+            (builtins.filter (lang: builtins.elem lang availableLanguages))
+          ];
+        in
+        if value == "auto" then languagesFromSpelllang else value;
+    };
+
+    includeSuggestions = lib.mkOption {
+      type = types.bool;
+      default = false;
+      example = true;
+      description = ''
+        Whether to also fetch suggestion files (`.sug`) when available.
+
+        Warning, using suggestion files can lead to higher memory usage.
+
+        See https://neovim.io/doc/user/spell.html#spell-NOSUGFILE.
+      '';
+    };
+
+    spellfiles = lib.mkOption {
+      type = with types; listOf (enum availableSpellfiles);
+      default = [ ];
+      description = ''
+        Explicitly specify spellfiles to install.
+
+        Possible values correspond to the spellfiles available at https://ftp.nluug.nl/pub/vim/runtime/spell/.
+      '';
+      example = [
+        "en.utf-8.spl"
+        "en.utf-8.sug"
+        "fr.utf-8.spl"
+      ];
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    extraFiles =
+      let
+        /*
+          Infers the spellfiles names from a language identifier.
+
+          The spellfiles associated with language `LL` are:
+          - `LL.<ENCODING>.spl`: main spell file
+          - `LL.<ENCODING>.sug` (optional): additional file for more precise suggestions
+
+          `<ENCODING>` is inferred from `opts.encoding` (if set) and defaults to `utf-8`.
+        */
+        getFilenamesFromLanguage =
+          lang:
+          let
+            # Default to utf-8 encoding
+            encoding = config.opts.encoding or "utf-8";
+
+            # Main spellfile (.spl)
+            baseName = "${lang}.${encoding}";
+
+            # Optional suggestion spellfile (.sug)
+            sugFilename = "${baseName}.sug";
+            includeSugSpellfile =
+              # user has enabled fetching suggestion spellfiles
+              cfg.includeSuggestions
+
+              # a suggestion spellfile is available for this language-encoding pair
+              && (lib.hasAttr sugFilename spellfilesHashes);
+          in
+          [
+            "${baseName}.spl"
+          ]
+          ++ lib.optional includeSugSpellfile sugFilename;
+
+        # [ "en.utf-8.spl" "en.utf-8.sug" "fr.utf-8.spl" ]
+        spellfiles = lib.unique (
+          # spellfiles from `cfg.languages`
+          (lib.concatMap getFilenamesFromLanguage cfg.languages)
+
+          # explicitly requested spellfiles
+          ++ cfg.spellfiles
+        );
+
+        /*
+          Maps "en.utf-8.spl" to:
+          {
+            name = "spell/en.utf-8.spl";
+
+            value.source = pkgs.fetchurl {
+              url = "https://ftp.nluug.nl/pub/vim/runtime/spell/en.utf-8.spl";
+              hash = "sha256-/sq9yUm2o50ywImfolReqyXmPy7QozxK0VEUJjhNMHA=";
+            };
+          }
+        */
+        fetchSpellFile = filename: {
+          # Destination path for this spellfile
+          name = "spell/${filename}";
+
+          value.source = pkgs.fetchurl (
+            spellfilesHashes.${filename}
+              or (throw "Spellfile `${filename}` is not available in https://ftp.nluug.nl/pub/vim/runtime/spell/")
+          );
+        };
+      in
+      /*
+        {
+          "spell/en.utf-8.spl".source = "/nix/store/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-en.utf-8.spl"
+          "spell/en.utf-8.sug".source = "/nix/store/yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy-en.utf-8.sug"
+          "spell/fr.utf-8.spl".source = "/nix/store/zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz-fr.utf-8.spl"
+        }
+      */
+      lib.listToAttrs (map fetchSpellFile spellfiles);
+  };
+}
diff --git a/tests/test-sources/modules/spellfiles.nix b/tests/test-sources/modules/spellfiles.nix
new file mode 100644
index 00000000..75f6e9db
--- /dev/null
+++ b/tests/test-sources/modules/spellfiles.nix
@@ -0,0 +1,95 @@
+{
+  default = {
+    spellfiles.enable = true;
+  };
+
+  custom-languages = {
+    spellfiles = {
+      enable = true;
+
+      includeSuggestions = true;
+      languages = [
+        "en"
+        "fr"
+        "de"
+      ];
+    };
+  };
+
+  custom-encoding = {
+    # Neovim cannot start with an encoding different from utf-8:
+    # Error while calling lua chunk: vim/_options.lua:0: E519: Option not supported
+    test.runNvim = false;
+
+    opts.encoding = "iso-8859-2";
+    spellfiles = {
+      enable = true;
+      languages = [
+        "pl"
+        "ro"
+        "sk"
+      ];
+    };
+  };
+
+  lang-from-nvim-options = {
+    spellfiles.enable = true;
+    opts.spelllang = "en_us,fr,medical";
+
+    imports = [
+      (
+        { config, lib, ... }:
+        {
+          assertions =
+            let
+              printList = l: ''[ "${lib.concatStringsSep ''", "'' l}" ]'';
+              expected = [
+                "en"
+                "fr"
+              ];
+            in
+            [
+              {
+                assertion = config.spellfiles.languages == expected;
+                message = ''
+                  `config.spellfiles.languages` is wrongly inferred from `opts.spellang`.
+                  It is ${printList config.spellfiles.languages} instead of ${printList expected}.
+                '';
+              }
+            ];
+        }
+      )
+    ];
+  };
+
+  custom-spellfiles = {
+    spellfiles = {
+      enable = true;
+
+      spellfiles = [
+        "en.utf-8.spl"
+        "sr@latin.utf-8.spl"
+        "tn.iso-8859-2.spl"
+        "sw.latin1.sug"
+      ];
+    };
+  };
+
+  both-languages-and-spellfiles = {
+    spellfiles = {
+      enable = true;
+
+      languages = [
+        "es"
+        "de"
+        "fr"
+      ];
+
+      spellfiles = [
+        "en.utf-8.spl"
+        "fr.utf-8.spl"
+        "en.utf-8.sug"
+      ];
+    };
+  };
+}
diff --git a/update-scripts/default.nix b/update-scripts/default.nix
index 35985b76..050f5f23 100644
--- a/update-scripts/default.nix
+++ b/update-scripts/default.nix
@@ -27,4 +27,5 @@ lib.fix (self: {
   none-ls-builtins = pkgs.callPackage ./none-ls.nix { };
   rust-analyzer-options = pkgs.callPackage ./rust-analyzer { };
   lspconfig-servers = pkgs.callPackage ./nvim-lspconfig { };
+  fetch-spellfiles = pkgs.callPackage ./fetch-spellfiles.nix { };
 })
diff --git a/update-scripts/fetch-spellfiles.nix b/update-scripts/fetch-spellfiles.nix
new file mode 100644
index 00000000..f208f571
--- /dev/null
+++ b/update-scripts/fetch-spellfiles.nix
@@ -0,0 +1,44 @@
+{
+  writeShellApplication,
+  curl,
+  nix,
+  ...
+}:
+writeShellApplication {
+  name = "fetch-spellfiles";
+
+  runtimeInputs = [
+    curl
+    nix
+  ];
+
+  text = ''
+    echo "{"
+
+    BASE_URL="https://ftp.nluug.nl/pub/vim/runtime/spell/"
+
+    html=$(curl -s "$BASE_URL")
+
+    # Extract only .spl and .sug file links
+    readarray -t filenames < <(echo "$html" | grep -oP '(?<=href=")[^"]+\.(spl|sug)' | sort -u)
+
+    for filename in "''${filenames[@]}"; do
+
+      url="$BASE_URL$filename"
+
+      # Special characters (like '%40', standing for `@`) are invalid for nix store paths
+      # -> We replace all non-alphanumeric characters with '_' and used this sanitized filename for
+      # the derivation name
+      sanitized_filename="''${filename//[^a-zA-Z0-9]/_}"
+      sha256=$(nix-prefetch-url "$url" --name "$sanitized_filename")
+
+      hash=$(nix hash convert --to sri --hash-algo sha256 "$sha256")
+
+      # Ugly hardcoding of the `%40` -> `@` substitution
+      filename="''${filename//%40/@}"
+      echo -e "  \"$filename\": { url: \"$url\", hash: \"$hash\" },"
+    done
+
+    echo "}"
+  '';
+}
diff --git a/update-scripts/generate.nix b/update-scripts/generate.nix
index 91cb0d73..adf498aa 100644
--- a/update-scripts/generate.nix
+++ b/update-scripts/generate.nix
@@ -1,9 +1,11 @@
 {
+  lib,
   writeShellApplication,
   rust-analyzer-options,
   efmls-configs-sources,
   none-ls-builtins,
   lspconfig-servers,
+  fetch-spellfiles,
   nixfmt-rfc-style,
   nodePackages,
 }:
@@ -49,6 +51,12 @@ writeShellApplication {
     echo "lspconfig servers"
     prettier --parser=json "${lspconfig-servers}" >"$generated_dir/lspconfig-servers.json"
 
+    echo "fetching spellfiles"
+    ${lib.getExe fetch-spellfiles} > "$generated_dir/spellfiles.json"
+    prettier --parser=json --write "$generated_dir/spellfiles.json"
+
+    ################################################################
+
     if [ -n "$commit" ]; then
       cd "$generated_dir"
       git add .