neotest: Rework to use Go modules

GOPATH is going to go away in Go 1.17 and most of in-tree SlapOS things are
already built using modules - including upcoming wendelin.core 2 that also
builds/uses NEO/go. This way maintaining GOPATH-based approach becomes just
unneccesary burden (modulo development, where it is still needed sometime
unfortunately golang/go#37755 (comment))

software/neotest/software-dev.cfg

@@ -2,12 +2,7 @@
 [buildout]
 extends = software.cfg
 
-
-[go_lab.nexedi.com_kirr_go123]
-branch	= master
-revision=
-
-[go_lab.nexedi.com_kirr_neo]
+[neo]
 branch	= t
 revision=
 

software/neotest/software.cfg

@@ -8,7 +8,6 @@ extends =
     ../../stack/slapos.cfg
     ../neoppod/software-common.cfg
     ../../component/golang/buildout.cfg
-    gowork.cfg
     ../../component/sqlite3/buildout.cfg
     ../../component/zlib/buildout.cfg
     ../../component/wendelin.core/buildout.cfg
@@ -49,20 +48,31 @@ parts =
     instance.cfg
 
 
-# go packages to install (+ automatically their dependencies)
+[neo]
+<= go-git-package
+go.importpath = lab.nexedi.com/kirr/neo
+repository    = https://lab.nexedi.com/kirr/neo.git
+revision      = v1.12-3107-gf278d611
+
+[goperf]
+<= go-git-package
+go.importpath = golang.org/x/perf
+repository    = https://lab.nexedi.com/kirr/go.perf.git
+revision      = e8bebf9314da
+
+# go programs to install
 [gowork]
 install =
-    lab.nexedi.com/kirr/neo/go/...
-    github.com/pkg/profile
-    golang.org/x/perf/cmd/benchstat
+    ${neo:location}/go:./...
+    ${goperf:location}:./cmd/benchstat
 
 cpkgpath =
     ${sqlite3:location}/lib/pkgconfig
     ${zlib:location}/lib/pkgconfig
 
 # dev-install neo from go checkout
 [neoppod-develop]
-setup   = ${go_lab.nexedi.com_kirr_neo:location}
+setup   = ${neo:location}
 
 
 # neotest-env.sh + neotest wrapper
@@ -99,7 +109,7 @@ template = inline:
   [tnxdtest]
   recipe = plone.recipe.command
   stop-on-error = yes
-  command = ln -s -t $${directory:t} ${gowork:src}/lab.nexedi.com/kirr/neo/go/neo/t/.nxdtest
+  command = ln -s -t $${directory:t} ${neo:location}/go/neo/t/.nxdtest