dnscrypt-proxy.install

post_install() {
    systemd-sysusers dnscrypt.conf
}

dnscrypt-proxy.socket

[Unit]
Description=dnscrypt-proxy listening socket

[Socket]
ListenStream=127.0.0.1:5353
ListenDatagram=127.0.0.1:5353

[Install]
WantedBy=sockets.target

dnscrypt-proxy@.service

[Unit]
Description=DNSCrypt client proxy
Documentation=man:dnscrypt-proxy(8)
Requires=dnscrypt-proxy.socket
After=network.target
Before=nss-lookup.target

[Install]
Also=dnscrypt-proxy.socket
WantedBy=multi-user.target

[Service]
User=dnscrypt
Type=simple
NonBlocking=true
ExecStart=/usr/bin/dnscrypt-proxy --resolver-name=%i --local-address=127.0.0.1:5353

dnscrypt.sysusers

u dnscrypt 47 "DNSCrypt"

PKGBUILD

# $Id$
# Maintainer: Felix Yan <felixonmars@archlinux.org>
# Contributor: Techlive Zheng <techlivezheng at gmail dot com>
# Contributor: peace4all <markspost at rocketmail dot com>

pkgname=dnscrypt-proxy
pkgver=1.7.0
pkgrel=1
pkgdesc="A tool for securing communications between a client and a DNS resolver"
arch=('i686' 'x86_64')
url="http://dnscrypt.org/"
license=('custom:ISC')
depends=('libsodium' 'systemd')
install=dnscrypt-proxy.install
source=("https://download.dnscrypt.org/$pkgname/$pkgname-$pkgver.tar.gz"
        "dnscrypt-proxy@.service"
        "dnscrypt-proxy.socket"
        "dnscrypt.sysusers")
sha512sums=('611d9cd9d9c086ec8e2b60f6c574451eae71ea07de85973049be7090cfbd8bf790d41f8a4a2b39d74091fba7091551967b93b85a8661c03ecad43d868df597a3'
            '7a0550142a2842f98ed8e161a987f38d31a03e9de8511d9659fd48e2de249fd74e5ca22ca2b663f91168bfb12dc1a63eb42097c4c6c4d17ff50b94acc782bb1a'
            '4466321db8db569c9e9373dc05d9ef657a744e44803d03b985b4d25e0210564578a7f65df6a69752444b24aec38cd4cf773bd6d9d8ca8e627419fbd1b7649938'
            '6e004d03374fc68117016291a67c33096858e1eb0eecfa9208c72ce5fc8749aff73da8eb5d32dc207c1be405a8a06a98fdab4c7b23bab5ac6027343217f2b456')

build() {
  cd "$pkgname-$pkgver"
  ./configure --prefix=/usr --sbindir=/usr/bin --with-systemd
  make
}

package() {
  cd "$pkgname-$pkgver"
  make DESTDIR="$pkgdir" install

  install -Dm 644 "$srcdir/dnscrypt.sysusers" "$pkgdir/usr/lib/sysusers.d/dnscrypt.conf"
  install -Dm 644 {"$srcdir","$pkgdir"/usr/lib/systemd/system}/dnscrypt-proxy@.service
  install -Dm 644 {"$srcdir","$pkgdir"/usr/lib/systemd/system}/dnscrypt-proxy.socket

  mkdir -p "$pkgdir"/usr/share/{licenses,doc}/$pkgname
  install -m 644 COPYING "$pkgdir"/usr/share/licenses/$pkgname
  install -m 644 AUTHORS NEWS README README.markdown "$pkgdir"/usr/share/doc/$pkgname
}