docs: update install from source section

docs/guide/install.md

@@ -4,7 +4,7 @@
 
 maintainer: [@kotontrion](https://github.com/kotontrion)
 
-```sh [<i class="devicon-archlinux-plain"></i> Arch]
+```sh
 yay -S aylurs-gtk-shell-git
 ```
 
@@ -20,7 +20,7 @@ Read more about it on the [nix page](./nix)
 
 2. Install the Astal js package
 
-```sh [<i class="devicon-linux-plain"></i> From Source]
+```sh
 git clone https://github.com/aylur/astal
 cd astal/lang/gjs
 meson setup --prefix /usr build
@@ -29,9 +29,22 @@ meson install -C build
 
 2. Install AGS
 
-```sh [<i class="devicon-linux-plain"></i> From Source]
-# Install AGS
+```sh
 git clone https://github.com/aylur/ags.git
 cd ags
-go build
+
+go install -ldflags "\
+    -X 'main.gtk4LayerShell=$(pkg-config --variable=libdir gtk4-layer-shell-0)/libgtk4-layer-shell.so' \
+    -X 'main.astalGjs=$(pkg-config --variable=srcdir astal-gjs)'"
 ```
+
+:::tip
+`go install` will install to `$GOPATH/bin/ags` or `$HOME/go/bin/ags`.
+You might wish to move the binary to more traditional linux directories.
+
+```sh
+sudo mv $GOPATH/bin/ags /usr/bin/ags
+mv $GOPATH/bin/ags ~/.local/bin/ags
+```
+
+:::