This builds a snap package of httpie.

Because it's meant for use in snappy systems, it also includes some httpie and/or requests plugins to support snapd. Right now that means unix socket support, but soon also macaroon auth.

Also some commandline wrangling is done to make it nicer to use with snapd itself; in particular,

~:$ http snapd:///v2/system-info
HTTP/1.1 200 OK
Content-Length: 88
Content-Type: application/json
Date: Tue, 26 Apr 2016 15:52:36 GMT

{
    "result": {
        "flavor": "core",
        "series": "16"
    },
    "status": "OK",
    "status-code": 200,
    "type": "sync"
}

HTH. HAND.