Installing python and dependencies with minimum size

Ideally the wpa_supplicant.conf could be configured, as explained here.

Previously an openwrt user had the same issue but for my 'weird' dragino version I cannot find the wpa_supplicant.conf file in /etc but theres a wireless file

root@dragino-227794:/etc/config# cat wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option phy 'phy0'
        option htmode 'HT20'
        list ht_capab 'SHORT-GI-40'
        list ht_capab 'DSSS_CCK-40'
        option hwmode '11ng'
        option disabled '0'
        option noscan '1'
        option txpower '17'
        option channel '11'
        option country 'DE'

config wifi-iface 'ap_0'
        option device 'radio0'
        option ifname 'wlan0'
        option network 'lan'
        option mode 'ap'
        option hidden '0'
        option maxassoc '30'
        option disabled '0'
        option encryption 'psk2'
        option key 'dragino+dragino'
        option ssid 'dragino-227794'

config wifi-iface 'sta_0'
        option device 'radio0'
        option ifname 'wlan0-2'
        option mode 'sta'
        option network 'wwan'
        option encryption 'psk2'
        option ssid 'Host-SSID'
        option key 'Host-Passphrase'
        option disabled '0'

root@dragino-227794:/etc/config#