Add detection phase for Python projects

cmd/test-runtime/main.go

@@ -5,19 +5,18 @@ import (
 	"os"
 	"path/filepath"
 
+	condaenvupdate "github.com/paketo-buildpacks/conda-env-update"
 	gomodvendor "github.com/paketo-buildpacks/go-mod-vendor"
 	"github.com/paketo-buildpacks/packit"
+	pipenvinstall "github.com/paketo-buildpacks/pipenv-install"
+	pythonstart "github.com/paketo-buildpacks/python-start"
 )
 
 const GoModLocation = "go.mod"
 
-func main() {
-	if len(os.Args) < 2 {
-		log.Fatalln("Usage: ./test-runtime <project directory>")
-	}
-
-	workingDir := os.Args[1]
+var workingDir string
 
+func detectGo() {
 	/* First check if it is a go.mod project */
 	goModParser := gomodvendor.NewGoModParser()
 	detect := gomodvendor.Detect(goModParser)
@@ -44,6 +43,76 @@ func main() {
 		return
 	}
 
+	// FIXME: what about Go projects that do not use any of the
+	//        above but contain a Makefile to call 'go build'
+
 	/* Not a Go project */
-	log.Println("No Go project detected")
+	log.Println("Not a Go project")
+}
+
+func detectPython() {
+	/* Check for Pipfile project */
+	pipfileParser := pipenvinstall.NewPipfileParser()
+	pipfileLockParser := pipenvinstall.NewPipfileLockParser()
+	detect := pipenvinstall.Detect(pipfileParser, pipfileLockParser)
+	_, err := detect(packit.DetectContext{
+		WorkingDir: workingDir,
+	})
+	if err == nil {
+		log.Println("Python Pipfile project detected")
+		return
+	}
+
+	/* Check for pip project */
+	_, err = os.Stat(filepath.Join(workingDir, "requirements.txt"))
+	if err == nil {
+		log.Println("Python pip project detected")
+		return
+	}
+
+	/* Check for conda project */
+	detect = condaenvupdate.Detect()
+	_, err = detect(packit.DetectContext{
+		WorkingDir: workingDir,
+	})
+	if err == nil {
+		log.Println("Python conda project detected")
+		return
+	}
+
+	/* Check for all other possibilities of a Python project */
+	detect = pythonstart.Detect()
+	_, err = detect(packit.DetectContext{
+		WorkingDir: workingDir,
+	})
+	if err == nil {
+		log.Println("Python project detected")
+		return
+	}
+
+	/* Not a Python project */
+	log.Println("Not a Python project")
+}
+
+func detectNode() {
+	/* Not a Node project */
+	log.Println("Not a Node project")
+}
+
+func detectRuby() {
+	/* Not a Ruby project */
+	log.Println("Not a Ruby project")
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatalln("Usage: ./test-runtime <project directory>")
+	}
+
+	workingDir = os.Args[1]
+
+	detectGo()
+	detectPython()
+	detectNode()
+	detectRuby()
 }

go.mod

@@ -39,8 +39,11 @@ require (
 	github.com/moby/moby v20.10.6+incompatible
 	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635
 	github.com/opencontainers/image-spec v1.0.1
+	github.com/paketo-buildpacks/conda-env-update v0.2.2
 	github.com/paketo-buildpacks/go-mod-vendor v0.3.1
-	github.com/paketo-buildpacks/packit v0.14.3
+	github.com/paketo-buildpacks/packit v1.3.0
+	github.com/paketo-buildpacks/pipenv-install v0.2.3
+	github.com/paketo-buildpacks/python-start v0.7.0
 	github.com/pkg/errors v0.9.1
 	github.com/rogpeppe/go-internal v1.5.2 // indirect
 	github.com/rs/zerolog v1.20.0

go.sum

@@ -392,8 +392,9 @@ github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4
 github.com/fvbommel/sortorder v1.0.1/go.mod h1:uk88iVf1ovNn1iLfgUVU2F9o5eO30ui720w+kxuqRs0=
 github.com/gabriel-vasile/mimetype v1.1.2/go.mod h1:6CDPel/o/3/s4+bp6kIbsWATq8pmgOisOPG40CJa6To=
 github.com/gabriel-vasile/mimetype v1.3.0/go.mod h1:fA8fi6KUiG7MgQQ+mEWotXoEOvmxRtOJlERCzSmRvr8=
-github.com/gabriel-vasile/mimetype v1.3.1 h1:qevA6c2MtE1RorlScnixeG0VA1H4xrXyhyX3oWBynNQ=
 github.com/gabriel-vasile/mimetype v1.3.1/go.mod h1:fA8fi6KUiG7MgQQ+mEWotXoEOvmxRtOJlERCzSmRvr8=
+github.com/gabriel-vasile/mimetype v1.4.0 h1:Cn9dkdYsMIu56tGho+fqzh7XmvY2YyGU0FnbhiOsEro=
+github.com/gabriel-vasile/mimetype v1.4.0/go.mod h1:fA8fi6KUiG7MgQQ+mEWotXoEOvmxRtOJlERCzSmRvr8=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7 h1:LofdAjjjqCSXMwLGgOgnE+rdPuvX9DxCqaHwKy7i/ko=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
 github.com/gavv/httpexpect v2.0.0+incompatible/go.mod h1:x+9tiU1YnrOvnB725RkpoLv1M62hOWzwo5OXotisrKc=
@@ -1022,8 +1023,9 @@ github.com/onsi/gomega v1.10.5/go.mod h1:gza4q3jKQJijlu05nKWRCW/GavJumGt8aNRxWg7
 github.com/onsi/gomega v1.12.0/go.mod h1:lRk9szgn8TxENtWd0Tp4c3wjlRfMTMH27I+3Je41yGY=
 github.com/onsi/gomega v1.13.0/go.mod h1:lRk9szgn8TxENtWd0Tp4c3wjlRfMTMH27I+3Je41yGY=
 github.com/onsi/gomega v1.14.0/go.mod h1:cIuvLEne0aoVhAgh/O6ac0Op8WWw9H6eYCriF+tEHG0=
-github.com/onsi/gomega v1.15.0 h1:WjP/FQ/sk43MRmnEcT+MlDw2TFvkrXlprrPST/IudjU=
 github.com/onsi/gomega v1.15.0/go.mod h1:cIuvLEne0aoVhAgh/O6ac0Op8WWw9H6eYCriF+tEHG0=
+github.com/onsi/gomega v1.16.0 h1:6gjqkI8iiRHMvdccRJM8rVKjCWk6ZIm6FTm3ddIe4/c=
+github.com/onsi/gomega v1.16.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
 github.com/op/go-logging v0.0.0-20160315200505-970db520ece7/go.mod h1:HzydrMdWErDVzsI23lYNej1Htcns9BCg93Dk0bBINWk=
 github.com/opencontainers/go-digest v0.0.0-20170106003457-a6d0ee40d420/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/go-digest v0.0.0-20180430190053-c9281466c8b2/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
@@ -1048,22 +1050,31 @@ github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJ
 github.com/openzipkin/zipkin-go v0.2.1/go.mod h1:NaW6tEwdmWMaCDZzg8sh+IBNOxHMPnhQw8ySjnjRyN4=
 github.com/openzipkin/zipkin-go v0.2.2/go.mod h1:NaW6tEwdmWMaCDZzg8sh+IBNOxHMPnhQw8ySjnjRyN4=
 github.com/pact-foundation/pact-go v1.0.4/go.mod h1:uExwJY4kCzNPcHRj+hCR/HBbOOIwwtUjcrb0b5/5kLM=
+github.com/paketo-buildpacks/conda-env-update v0.2.2 h1:0bT6Se/r/06Gc3sBeg+OJ/9BVIp8D/rEzeJNtvxOBSQ=
+github.com/paketo-buildpacks/conda-env-update v0.2.2/go.mod h1:OKSG9rf9ClDLcoHA3JJgbRECShCpNJKrmkYgIiYAu9k=
 github.com/paketo-buildpacks/go-mod-vendor v0.3.1 h1:4ltB7mmMg2dGRNDLxwPMLoY98rePUhny/6L0QUn8aYU=
 github.com/paketo-buildpacks/go-mod-vendor v0.3.1/go.mod h1:ycd4yAggQShyoQg+bXZyaxazx/Nms98f1SH9NkG/I3k=
 github.com/paketo-buildpacks/occam v0.0.22/go.mod h1:aPNRyPEgYp4a01O4UKAuFWYnRmY4ujeuV3x6yAa1hxs=
 github.com/paketo-buildpacks/occam v0.1.4/go.mod h1:Rn7l2Ndm1ff0RGj0hWJwH8+iGhkEGY5nt/qpWKWB9lE=
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-github.com/paketo-buildpacks/packit v0.14.3 h1:U9MwOZepHVQKODQUG3+CU8tZaNhGN+A0qgNfLgu/8d0=
 github.com/paketo-buildpacks/packit v0.14.3/go.mod h1:D1a4w1fN+iLjQj9iGEmwp3e+MN8ohHSdKTiwS7cK3xg=
+github.com/paketo-buildpacks/packit v1.0.0/go.mod h1:D3m0I2dzQrAsW9h8+/psbVMa+fYTjqcER7vxeEAKKWk=
+github.com/paketo-buildpacks/packit v1.3.0 h1:Sqcsyr6zsM5XF8E/vuv8fTjoTeD0CHKnfUwmeo6q864=
+github.com/paketo-buildpacks/packit v1.3.0/go.mod h1:RTUFi6o/EszIkL/XWXwV7Xauc22qsIVwBz6MMdituzA=
+github.com/paketo-buildpacks/pipenv-install v0.2.3 h1:6ZRAKIPXigt+lJefh+qlIylkpG7bz5vR+LnuPpQWdPo=
+github.com/paketo-buildpacks/pipenv-install v0.2.3/go.mod h1:cykBCEGSdDpyGTjs4n2vHjKK4NDAA5mSFqv6a80mT9s=
+github.com/paketo-buildpacks/python-start v0.7.0 h1:eBE4D8Uy6pUL/+3+eLjZTxpguOBZkDWA6MlVxfat+ww=
+github.com/paketo-buildpacks/python-start v0.7.0/go.mod h1:lVmId1wEYgOeo01a+sY9kF7TeJEeIY58L7yBL+nrM7s=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
 github.com/pelletier/go-buffruneio v0.2.0/go.mod h1:JkE26KsDizTr40EUHkXVtNPvgGtbSNq5BcowyYOWdKo=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
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 github.com/pelletier/go-toml v1.9.1/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
-github.com/pelletier/go-toml v1.9.3 h1:zeC5b1GviRUyKYd6OJPvBU/mcVDVoL1OhT17FCt5dSQ=
 github.com/pelletier/go-toml v1.9.3/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
+github.com/pelletier/go-toml v1.9.4 h1:tjENF6MfZAg8e4ZmZTeWaWiT2vXtsoO6+iuOjFhECwM=
+github.com/pelletier/go-toml v1.9.4/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
 github.com/performancecopilot/speed v3.0.0+incompatible/go.mod h1:/CLtqpZ5gBg1M9iaPbIdPPGyKcA8hKdoy6hAWba7Yac=
 github.com/peterbourgon/diskv v2.0.1+incompatible h1:UBdAOUP5p4RWqPBg048CAvpKN+vxiaj6gdUUzhl4XmI=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
@@ -1478,8 +1489,9 @@ golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLd
 golang.org/x/net v0.0.0-20210331212208-0fccb6fa2b5c/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
-golang.org/x/net v0.0.0-20210505024714-0287a6fb4125 h1:Ugb8sMTWuWRC3+sz5WeN/4kejDx9BvIwnPUiJBjJE+8=
 golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210525063256-abc453219eb5 h1:wjuX4b5yYQnEQHzd+CBcrcC6OVR2J1CN6mUy0oSxIPo=
+golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -1592,6 +1604,7 @@ golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210603125802-9665404d3644/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210819135213-f52c844e1c1c h1:Lyn7+CqXIiC+LOR9aHD6jDK+hPcmAuCfuXztd1v4w1Q=
 golang.org/x/sys v0.0.0-20210819135213-f52c844e1c1c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=