Made a new target to generate templates only when they are missing. Also put go install jade in it. Hence, no need in check in the PKGBUILD.

Makefile

@@ -9,17 +9,18 @@ VERSION=23.21.0
 
 LDFLAGS=-ldflags "-s -w -X main.version=${VERSION}" -tags osusergo,netgo
 
-all: ${TARGET}
+all: web/*.jade.go ${TARGET}
 
 .PHONY: ${TARGET}
 
 ${TARGET}:
-	go generate web/web.go
 	go build -o bin/$@ ${LDFLAGS} cmd/$@/main.go
 	go build -o bin/$@-clean ${LDFLAGS} cmd/$@-clean/main.go
 
-install-jade:
+web/*.jade.go:
 	go install github.com/Joker/jade/cmd/jade@latest
+	go generate web/web.go
+
 
 install:
 	install -Dm 0755 bin/${TARGET} ${DESTDIR}usr/bin/${TARGET}

build/archlinux/PKGBUILD

@@ -17,10 +17,6 @@ build() {
 
     export GOPATH="$srcdir"/gopath
 
-    if [ ! -f "$(go env GOPATH)/bin/jade" ]; then
-        make DESTDIR="$pkgdir/" install-jade
-    fi
-
     make VERSION=$pkgver DESTDIR="$pkgdir/"
 }