1 files changed, 22 insertions, 2 deletions

diff --git a/README.md b/README.md
index bdd97e3..dae06b8 100644
--- a/README.md
+++ b/README.md
@@ -56,10 +56,20 @@ for processes that were not spawned by that same *etoolkit* session.
 
 ## Installation
 
-### pip (pypi)
+### Arch Linux
 
    ```bash
-   pip install etoolkit
+   # fetch sgs' developer key from the keyserver and sign it
+   pacman-key --recv-keys A6645797661E2F473DD3FF06BCE70555C3BB08F7
+   pacman-key --lsign-key A6645797661E2F473DD3FF06BCE70555C3BB08F7
+
+   # add sgs' repository in /etc/pacman.conf and require packages to be signed
+   [sgs]
+   Server = https://pkg.pichove.org/archlinux/$repo/os/$arch
+   SigLevel = PackageRequired
+
+   # install etoolkit
+   pacman -S python-etoolkit
    ```
 
 
@@ -72,6 +82,14 @@ for processes that were not spawned by that same *etoolkit* session.
    emerge dev-python/etoolkit
    ```
 
+
+### pip (pypi)
+
+   ```bash
+   pip install etoolkit
+   ```
+
+
 ## Encryption & decryption scheme
 
 The etoolkit encryption format is currently at version 2.
@@ -262,6 +280,8 @@ When all values are fetched from a given instance (and its parents) and then
 decrypted, they are further processed by replacing macros with their
 corresponding values. Currently the following macros are supported:
 
+- **%e{MYVAR}** - the current value of the env. var. *MYVAR*
+
 - **%e** - the current value of the env. var. corresponding to the same key
 
 - **%h** - the home directory of the user running *etoolkit* (~/)