fscrypt: add package for file-level encryption management

PKGBUILD

+# Maintainer: Anatol Pomozov <anatol.pomozov@gmail.com>
+# Maintainer: Eric Biggers <ebiggers3 at gmail dot com>
+
+pkgname=fscrypt
+pkgver=0.2.5
+pkgrel=1
+pkgdesc='A tool for managing Linux filesystem encryption'
+arch=('x86_64')
+url='https://github.com/google/fscrypt'
+license=('Apache')
+makedepends=('go')
+depends=('pam')
+source=("fscrypt-$pkgver.zip::https://github.com/google/fscrypt/archive/v$pkgver.zip"
+        "pam_config")
+sha256sums=('7ec0dfe6d28079829dfd52bde20821d96957b3399fa47b3b2f4b7ae39b977dc7'
+            'ae6ceaefc6d936c95a9b7a3f925111ffb946e6fd0152373247f1d40132f05aef')
+
+prepare() {
+  cd "fscrypt-$pkgver"
+  # TODO: replace it with $SOURCE_DATE_EPOCH?
+  sed "s/\$(shell date)//g" -i Makefile
+}
+
+build() {
+  cd "fscrypt-$pkgver"
+  make
+}
+
+package() {
+  cd "fscrypt-$pkgver"
+  install -Dm755 -t "$pkgdir/usr/bin/" bin/fscrypt
+  install -Dm755 -t "$pkgdir/usr/lib/security/" bin/pam_fscrypt.so
+  install -Dm644 -t "$pkgdir/usr/share/licenses/fscrypt/" LICENSE
+}