X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/4002bee0c160c4d8137d5f58b0134a37a66b91b3..d0c44431d0e1386f0d3278f6a8bf84a01381e36a:/docs/admin/Installation.md

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 6b585579..d7d35b7e 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -45,6 +45,7 @@ For running Nominatim:
   * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
   * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
   * [Python 3](https://www.python.org/) (3.6+)
+  * [Python Typing Extensions](https://github.com/python/typing_extensions)
   * [Psycopg2](https://www.psycopg.org) (2.7+)
   * [Python Dotenv](https://github.com/theskumar/python-dotenv)
   * [psutil](https://github.com/giampaolo/psutil)
@@ -89,8 +90,7 @@ your `postgresql.conf` file.
     work_mem = (50MB)
     effective_cache_size = (24GB)
     synchronous_commit = off
-    checkpoint_segments = 100 # only for postgresql <= 9.4
-    max_wal_size = 1GB # postgresql > 9.4
+    max_wal_size = 1GB
     checkpoint_timeout = 10min
     checkpoint_completion_target = 0.9
 
@@ -164,7 +164,9 @@ sudo make install
     are upgrading an older database or want to run the
     [legacy tokenizer](../customize/Tokenizers.md#legacy-tokenizer) for
     some other reason, you need to enable the PostgreSQL module via
-    cmake: `cmake -DBUILD_MODULE=on ../Nominatim`
+    cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
+    you need to have the server development headers for PostgreSQL installed.
+    On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
 
 
 Nominatim installs itself into `/usr/local` per default. To choose a different