properly support xdg:

README.md

@@ -1,16 +1,16 @@
 # Aporia
 
-Aporia is a login manager that displays ascii art. It supports x11 and wayland sessions.
+Aporia is a login manager that displays ascii art. It supports x11 and wayland sessions, and the [XDG base directory specification](https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html).
 
 <img src="https://github.com/Lunarmagpie/aporia/assets/65521138/98e321a7-9bd7-4ef8-9b1d-da0be0a3c7dc" alt="drawing" width="700"/>
 
 Only systemd is supported.
 
-## Installtion
+## Compilation & Installtion
 Install the dependencies:
 - Go compiler
 - gcc
-- pam (libpam-dev on ubuntu)
+- pam (libpam-dev on debian based distros)
 
 Run the install.sh script as root.
 ```sh
@@ -68,15 +68,13 @@ font and all font sizes available on your computer.
 
 <details>
 <summary>Why does my ascii art show up as diamonds?</summary><br>
-
-Some terminal fonts do not support certain braille characters. Using a different ascii art generator will likely
-fix your problem.
+Some terminal fonts do not support braille characters. Using an ascii art generator that does not output braille characters will fix your problem.
 </details>
 
 <details>
 <summary>Is aporia production ready?</summary><br>
 
-There is a bug where somethimes the window manager will refuse to launch. I am looking into this.
+I daily drive aporia with no issues.
 
 </details>
 

login/env.go

@@ -63,15 +63,22 @@ func makeEnv(pam_handle *C.struct_pam_handle, pwnam *C.struct_passwd, desktopNam
 
 	setEnv("PATH", "/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin")
 
-	// pam_systemd options
+	// XDG Session environment.
+	// See: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
 	setEnv("XDG_SESSION_TYPE", sessionType)
 	setEnv("XDG_SESSION_DESKTOP", desktopName)
 	setEnv("XDG_SESSION_DESKTOP", desktopName)
 	setEnv("XDG_SESSION_CLASS", "user")
+
+	setEnv("XDG_CONFIG_HOME", fmt.Sprint(homeDir, "/.config"))
+	setEnv("XDG_CACHE_HOME", fmt.Sprint(homeDir, "/.cache"))
+	setEnv("XDG_DATA_HOME", fmt.Sprint(homeDir, "/.local/share"))
+	setEnv("XDG_STATE_HOME", fmt.Sprint(homeDir, "/.local/state"))
 	setEnv("XDG_RUNTIME_DIR", user)
-	// setEnv("XDG_SESSION_ID", "1")
-	// setEnv("XDG_SEAT", "seat0")
-	// setEnv("XDG_VTNR", "1")
+
+	// System Directories
+	setEnv("XDG_DATA_DIRS", "/usr/local/share:/usr/share")
+	setEnv("XDG_CONFIG_DIRS", "/etc/xdg")
 
 	os.Chown(user, int(pwnam.pw_uid), int(pwnam.pw_gid))