revise Linux instructions

hugo/content/installation/install/linux/index.md

@@ -5,24 +5,29 @@ weight = 30
 
 ## Install on Linux
 
-BornAgain is available as a Debian/Ubuntu package at https://tracker.debian.org/pkg/bornagain.
+There are three ways to install BornAgain on Linux:
+- [building from source]({{% relref "installation/building/unix" %}});
+- using the Debian/Ubuntu package provided by external maintainers
+  at https://tracker.debian.org/pkg/bornagain;
+- using the installer shell script described in the following.
 
-A self-contained binary installer is also produced for the major Linux distributions
-and their derivatives (like Debian, Ubuntu, ArchLinux, Manjaro, Fedora) and can be
-downloaded as a GitLab artifact.
-The installer includes all the libraries required for BornAgain, its Python package ('wheel'),
-plus additional libraries and plugins for the GUI. Note that the GUI is known to work on the
-[X11 graphics platform](https://en.wikipedia.org/wiki/X_Window_System), but Wayland is not
-tested yet; if you are using a Wayland platform, please let us know about your experience
-with BornAgain.
+The BornAgain Linux installer can be downloaded from {{% url-releases %}}.
+Under the present release, it is named `{{% recommended-linuxinstaller %}}`.
+
+The installer includes all the libraries required for BornAgain, its Python package ("wheel"),
+plus additional libraries and plugins for the GUI.
+
+We have tested the GUI with the standard X11 window system.
+If you are using the alternative Wayland window system,
+please let us know about your experience.
 
 The installer is self-extracting and does _not_ need any root permissions.
 
-The installer (e.g., `{{% recommended-linuxinstaller %}}`) can be used as follows
-(here, installation root path is chosen to be `/tmp/ba`):
+The installer can be used as follows
+(here, installation root path is chosen to be `~/ba`):
 ```
 $ chmod +x {{% recommended-linuxinstaller %}}  # permit execution
-$ ba_path='/tmp/ba'
+$ ba_path='~/ba'
 $ mkdir $ba_path  # make a deliberate installation path
 $ ./{{% recommended-linuxinstaller %}} --exclude-subdir --skip-license --prefix=$ba_path
 ```
@@ -32,12 +37,9 @@ $ cd $ba_path
 $ ./bin/bornagain
 ```
 
-The installer provides also a small help for its options; use the following to obtain
-a description of the available options:
+A description of available options can be displayed with
 ```
 $ {{% recommended-linuxinstaller %}} --help
 ```
 
-For other distributions, see [build instructions]({{% relref "installation/building/unix" %}}).
-
 {{% children  %}}