Restored PKGBUILD file.

Signed-off-by: chris <cbaba001@comcast.net>

PKGBUILD

@@ -0,0 +1,80 @@
+# Maintainer: Chris Baba <cbaba001@comcast.net>
+
+# When updating versions change 'pkgver', 'pkgrel' (if needed), and 'sha256sums.
+
+pkgname=chemcalc
+pkgver=0.9.1
+pkgrel=1
+pkgdesc='A chemical calculator that calculates the amount of reagents to use when making solutions.'
+arch=('x86_64')
+url='https://github.com/Chris-Baba/ChemCalc'
+license=('GPL-3.0-or-later')
+
+depends=(
+    'brotli' 
+    'bzip2' 
+    'curl' 
+    'dbus' 
+    'double-conversion' 
+    'duktape' 
+    'e2fsprogs' 
+    'expat' 
+    'fontconfig' 
+    'freetype2' 
+    'gcc-libs' 
+    'glib2' 
+    'glibc'
+    'graphite' 
+    'harfbuzz'
+    'hicolor-icon-theme'
+    'icu' 
+    'keyutils' 
+    'krb5' 
+    'libb2' 
+    'libcap'
+    'libffi' 
+    'libglvnd' 
+    'libidn2' 
+    'libnghttp2' 
+    'libnghttp3' 
+    'libpng'
+    'libproxy' 
+    'libpsl' 
+    'libssh2' 
+    'libunistring' 
+    'libx11' 
+    'libxau' 
+    'libxcb'
+    'libxdmcp' 
+    'libxkbcommon' 
+    'openssl' 
+    'pcre2' 
+    'qt6-base' 
+    'systemd-libs'
+    'util-linux-libs' 
+    'zlib' 
+    'zstd'
+    )
+
+makedepends=('cmake')
+
+## Accepted naming method example:
+## source=("${pkgname}-${pkgver}.tar.gz::https://github.com/coder/program/archive/v${pkgver}.tar.gz")
+
+source=("${pkgname}-${pkgver}.tar.gz::https://github.com/Chris-Baba/ChemCalc/archive/refs/tags/v${pkgver}.tar.gz") 
+
+sha256sums=('db535a1069ccaed50d6b0b965becc0357f44583ab235f7c77d7b37433b18b4c1')
+
+build() {
+    cmake \
+        -B build \
+        -S ChemCalc-${pkgver} \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_INSTALL_PREFIX:PATH='/usr' \
+        -Wno-dev
+    cmake --build build
+}
+
+package() {
+    DESTDIR="$pkgdir" cmake --install build    
+}