Fixed up PKGBUILD

PKGBUILD

@@ -1,24 +1,36 @@
-# Maintainer: Matt C <mdc028[at]bucknell[dot]edu>
+# Maintainer: Matt C     <matt[at]tar[dot]black>
+# Maintainer: Michal S <michal[at]tar[dot]black>
+# Developer:  Michal S <michal[at]tar[dot]black>
 
 pkgname=malachite
 pkgver=2.0.0
 pkgrel=1
 pkgdesc="Tool for packaging and maintaining pacman repositories"
-license=('GPL3')
-arch=('any')
+arch=('x86_64')
 url="https://github.com/crystal-linux/malachite"
+license=('GPL3')
 source=("git+$url")
 sha256sums=('SKIP')
 depends=('git' 'pacman-contrib' 'gnupg')
 makedepends=('cargo')
 
+prepare() {
+    cd "$srcdir/$pkgname"
+    cargo fetch --locked --target "$CARCH-unknown-linux-gnu"
+}
+
 build() {
-    cd ${srcdir}/malachite
-    cargo build --release
+    cd "$srcdir/$pkgname"
+    export RUSTUP_TOOLCHAIN=stable
+    export CARGO_TARGET_DIR=target
+    cargo build --frozen --release --all-features
 }
 
 package() {
-    mkdir -p $pkgdir/usr/bin
-    chmod +x ${srcdir}/malachite/target/release/mlc
-    cp ${srcdir}/malachite/target/release/mlc $pkgdir/usr/bin/.
-}
+    cd "$srcdir/$pkgname"
+    find target/release \
+        -maxdepth 1 \
+        -executable \
+        -type f \
+        -exec install -Dm0755 -t "${pkgdir}/usr/bin" {} +
+}