add provides

.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = stanc
 	pkgdesc = A package for obtaining Bayesian inference using the No-U-Turn sampler, a variant of Hamiltonian Monte Carlo.
 	pkgver = 2.29.2
-	pkgrel = 1
+	pkgrel = 2
 	url = http://mc-stan.org/
 	arch = i686
 	arch = x86_64
@@ -10,6 +10,7 @@ pkgbase = stanc
 	makedepends = texlive-core
 	makedepends = doxygen
 	depends = gcc-libs
+	provides = cmdstan
 	source = https://github.com/stan-dev/cmdstan/releases/download/v2.29.2/cmdstan-2.29.2.tar.gz
 	sha512sums = 8b1485c8832fa283307b87c491f259432a7284f4975d21e5424f3b1be0ca9bf1012443c0be1b01b09aecbff40f3d1bb6031abe3bb89d8e64380f61ed9d1ffec3
 

PKGBUILD

@@ -4,7 +4,7 @@
 pkgname='stanc'
 pkgdesc="A package for obtaining Bayesian inference using the No-U-Turn sampler, a variant of Hamiltonian Monte Carlo."
 pkgver=2.29.2
-pkgrel=1
+pkgrel=2
 arch=('i686' 'x86_64')
 url='http://mc-stan.org/'
 license=('BSD')
@@ -15,6 +15,7 @@ makedepends=('texlive-bin' 'texlive-core' 'doxygen'
 # 'gtest' 'benchmark' 'sundials' 'boost' 'eigen' 'tbb' 'stanmath'
 # 'python-cpplint' 'opencl-headers' 'rapidjson' 'cli11'
 )
+provides=("cmdstan")
 source=(https://github.com/stan-dev/cmdstan/releases/download/v$pkgver/cmdstan-$pkgver.tar.gz)
 sha512sums=('8b1485c8832fa283307b87c491f259432a7284f4975d21e5424f3b1be0ca9bf1012443c0be1b01b09aecbff40f3d1bb6031abe3bb89d8e64380f61ed9d1ffec3')
 
@@ -37,6 +38,7 @@ package() {
   # Install binaries:
   install -dm755                  "${pkgdir}/usr/bin"
   install -m755 bin/stanc         "${pkgdir}/usr/bin"
+  ln -s /usr/bin/stanc             "${pkgdir}/usr/bin/cmdstan"
   install -Tm755 bin/diagnose      "${pkgdir}/usr/bin/standiagnose"
   install -Tm755 bin/print         "${pkgdir}/usr/bin/stanprint"
   install -Tm755 bin/stansummary   "${pkgdir}/usr/bin/stansummary"