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Nix Vector Tiles

Create fully self-hosted Mapbox vector tiles with Nix using Tilemaker. All files are static served, thus can be used offline.

Demo

Uses data from Geofabrik to create vector tiles for Hessen (state in Germany).

Uncompressed (miniserve)

Tiles will be displays using maplibre-gl at 127.0.0.1:8081/index.html. Notice that files might display incorrectly across rebuilds due to serving directly from the Nix store. Files inside the Nix store have the same timestamps which cause caching issues inside the browser.

nix run github:jmpunkt/nix-vector-tiles#demo-maptiler-basic-gl-style

Compressed (Nginx + Qemu)

Tiles will be displays using maplibre-gl at 127.0.0.1:8080. Requires Nginx, thus runs in a Qemu instance.

nix run github:jmpunkt/nix-vector-tiles#demo-nginx-maptiler-basic-gl-style

Notice

Currently (22-04-2023) Firefox does not display sprites correctly. It is best to use Chromium based browsers.

Create Bundle

{buildTilesBundle, buildTilesMetadata, buildTiles, tilesStyles}: buildTilesBundle {
  host = "http://127.0.0.1:8081";
  metadataFn = tilesUrl:
    buildTilesMetadata {
      tileJson = {tiles = [tilesUrl];};
      tiles = buildTiles {
        name = "germany-hessen";
        src = fetchGeofabrik {
          continent = "europe";
          country = "germany";
          name = "hessen";
          date = "230101";
          sha256 = "sha256-sOoPtIEY4TxSm/p0MGc9LGzQtQmIafGH0IWbkby95K8=";
        };
        # renumber nodes for less memory consumption
        renumber = true;
        config = {settings.compress = "gzip";};
        # compression is disabled by default
        # config = {};
      };
    };
  styleFn = tilesStyles.maptiler-basic-gl-style;
};

Nginx

Here are some very short example configurations for Nginx. Notice that ${bundle} refers to a tile bundle derivation.

Serving From Subdirectory

location /map/ {
  alias ${bundle}/share/www/;
  try_files $uri $uri/ =403;

  location /map/tiles/data/ {
    gunzip on;
    gzip_static on;
    gzip_proxied expired no-cache no-store private auth;
  }
}

Serving From Root

Notice that root must be set to "${bundle}/share/www" in the Nginx config.

location / {
  try_files $uri /index.html;

   location /tiles/data/ {
    gunzip on;
    gzip_static on;
    gzip_proxied expired no-cache no-store private auth;
  }
}

TODO(s) / Limitations

  • allow font to be combined
  • package Maplibre-js
  • fix (Roboto) fonts for osm-liberty