Fix Pr comments

Add comment about PKGBUILD population
Add link to AUR Go package guidelines
Break long sed into smaller, more understandable parts

Author: Karl 'NaN' Wikström

.github/workflows/publish-aur.yml

@@ -17,8 +17,10 @@ jobs:
 
       - name: Update PKGBUILD
         run: |
-          sed -i "s/tag=/tag=${GITHUB_REF##*/}/g" build/PKGBUILD
-          sed -i "s/sha256sums=/sha256sums=('$(sha256sum ${GITHUB_REF##*/}.tar.gz | awk '{print $1;}')')/g" build/PKGBUILD
+          tag=${GITHUB_REF##*/}
+          hash=$(sha256sum $tag.tar.gz | awk '{print $1;}')
+          sed -i "s/tag=/tag=$tag/g" build/PKGBUILD
+          sed -i "s/sha256sums=/sha256sums=('$hash')/g" build/PKGBUILD
 
       - name: Publish AUR package
         uses: KSXGitHub/github-actions-deploy-aur@v2.2.0

build/PKGBUILD

@@ -1,6 +1,7 @@
 #Maintainer: Karl Wikström <boogrocha@sidus.io>
 #Maintainer: William Leven <boogrocha@sidus.io>
 
+# _tag and sha256 is populated by the pipeline
 _tag=
 pkgname=boogrocha
 pkgver=$_tag
@@ -21,6 +22,7 @@ _src="BooGroCha-${pkgver:1}"
 build() {
     cd $_src
     # Build as per Go package guidelines
+    # https://wiki.archlinux.org/index.php/Go_package_guidelines#Flags_and_build_options
     go build \
       -trimpath \
       -buildmode=pie \