docs: mention that `libssl-dev` and `openssl` are needed for installation
Closes
@@ -131,7 +131,13 @@ On most distributions, you'll need to install from source.
#### From source
-Run:
+First make sure that you have the `libssl-dev` and `openssl` packages installed
+by running something like this:
+```shell script
+sudo apt-get install libssl-dev openssl
+```
+
+Now run:
```shell script
cargo install --git https://github.com/martinvonz/jj.git
```
