clean up Makefile, remove set-taget, and add comment

 about building locally (in Readme) and
 remove ipfs dependency from ll-core module
 (this will be part of #152 instead)

go.mod

@@ -13,13 +13,10 @@ require (
 	github.com/go-logfmt/logfmt v0.5.0
 	github.com/gogo/protobuf v1.3.1
 	github.com/golang/protobuf v1.4.3
+	github.com/gopherjs/gopherjs v0.0.0-20190812055157-5d271430af9f // indirect
 	github.com/gorilla/websocket v1.4.2
 	github.com/gtank/merlin v0.1.1
 	github.com/hdevalence/ed25519consensus v0.0.0-20201207055737-7fde80a9d5ff
-	github.com/ipfs/go-ipfs v0.7.0
-	github.com/ipfs/go-ipfs-config v0.9.0
-	github.com/ipfs/interface-go-ipfs-core v0.4.0
-	github.com/lazyledger/lazyledger-core/p2p/ipld/plugin v0.0.0-00010101000000-000000000000
 	// TODO(ismail): update to tagged version after
 	// https://github.com/lazyledger/nmt/pull/19 gets merged
 	github.com/lazyledger/nmt v0.1.1-0.20210213205848-6cb03eeda173
@@ -33,6 +30,7 @@ require (
 	github.com/rcrowley/go-metrics v0.0.0-20200313005456-10cdbea86bc0
 	github.com/rs/cors v1.7.0
 	github.com/sasha-s/go-deadlock v0.2.0
+	github.com/smartystreets/assertions v1.0.1 // indirect
 	github.com/snikch/goodman v0.0.0-20171125024755-10e37e294daa
 	github.com/spf13/cobra v1.1.1
 	github.com/spf13/viper v1.7.1
@@ -45,9 +43,3 @@ require (
 	google.golang.org/grpc v1.33.2
 	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 )
-
-replace (
-	github.com/ipfs/go-ipfs v0.7.0 => github.com/lazyledger/go-ipfs v0.7.1-0.20210205233505-656642674e11
-	github.com/ipfs/go-verifcid => github.com/lazyledger/go-verifcid v0.0.2-0.20210205232850-c3e21cfe4064
-	github.com/lazyledger/lazyledger-core/p2p/ipld/plugin => ./p2p/ipld/plugin
-)

p2p/ipld/README.md

@@ -4,13 +4,7 @@
 
 Usually, a simple `make install` should build and install the plugin locally.
 
-If you want to compile against a locally checked out version of IPFS, run:
-
-```sh
-cd plugin
-./set-target.sh REPLACE_WITH_YOUR_LOCAL_PATH/go-ipfs
-make install
-```
+If you want to compile against a locally checked out version of IPFS, change the `replace` directive in go.mo.
 
 Running ipfs (e.g. `ipfs init` or `ipfs daemon`) loads the plugin automatically.
 

p2p/ipld/plugin/Makefile

@@ -22,11 +22,6 @@ endif
 
 .PHONY: install build
 
-go.mod: FORCE
-	#./set-target.sh github.com/lazyledger/go-ipfs@v0.7.1-0.20210202000024-02a5a799f618
-
-FORCE:
-
 lazyledger-plugin.so: plugin.go go.mod
 	$(GOCC) build $(GOFLAGS) -buildmode=plugin -o "$@" "$<"
 	chmod +x "$@"

p2p/ipld/plugin/go.mod

@@ -18,6 +18,9 @@ require (
 )
 
 replace (
-	github.com/ipfs/go-ipfs v0.7.0 => github.com/lazyledger/go-ipfs v0.7.1-0.20210213193504-c65604ccb2ed
-	github.com/ipfs/go-verifcid => github.com/lazyledger/go-verifcid v0.0.2-0.20210213182512-19890b0d114d
+	// If you encounter:
+	//  plugin was built with a different version of package X
+	// overwrite below line with a local directory with the corresponding version of go-ipfs checked out
+	github.com/ipfs/go-ipfs => github.com/lazyledger/go-ipfs v0.7.0-lazypatch
+	github.com/ipfs/go-verifcid => github.com/lazyledger/go-verifcid v0.0.1-lazypatch
 )