software/grafana: build with new module support in component/golang

We still need to checkout from git these packages, because most
of them use `replace` in their go.mod, which is only compatible
with installing as main module, but not as an external module.

promtail will use go-systemd when cgo is enabled, but we don't
want to ship a full systemd in slapos, so we build with CGO_ENABLED=0

grafana on the other hand needs to be build with CGO_ENABLED, because
it will use sqlite3. grafana also needs to use yarn to build the
frontend, so it remain a dedicated section with ad-hoc installation
method.

software/grafana/gowork.cfg

-# Code generated by gowork-snapshot; DO NOT EDIT.
-
-# list of go git repositories to fetch
-[gowork.goinstall]
-depends_gitfetch  =
-    ${go_github.com_golang_dep:recipe}
-    ${go_github.com_grafana_grafana:recipe}
-    ${go_github.com_grafana_loki:recipe}
-    ${go_github.com_influxdata_influxdb:recipe}
-    ${go_github.com_influxdata_telegraf:recipe}
-
-
-[go_github.com_golang_dep]
-<= go-git-package
-go.importpath = github.com/golang/dep
-repository    = https://github.com/golang/dep
-revision      = 1f7c19e5f5
-
-[go_github.com_grafana_grafana]
-<= go-git-package
-go.importpath = github.com/grafana/grafana
-repository    = https://github.com/grafana/grafana
-revision      = v7.4.3-0-g010f20c1c8
-
-[go_github.com_grafana_loki]
-<= go-git-package
-go.importpath = github.com/grafana/loki
-repository    = https://github.com/grafana/loki
-revision      = v2.1.0-188-g877f524c36
-
-[go_github.com_influxdata_influxdb]
-<= go-git-package
-go.importpath = github.com/influxdata/influxdb
-repository    = https://github.com/influxdata/influxdb
-revision      = v1.8.4-0-gbc8ec4384e
-
-[go_github.com_influxdata_telegraf]
-<= go-git-package
-go.importpath = github.com/influxdata/telegraf
-repository    = https://github.com/influxdata/telegraf
-revision      = v1.17.3-0-g24a552b90b

software/grafana/software.cfg

@@ -8,7 +8,6 @@ extends =
   ../../component/curl/buildout.cfg
   ../../component/dash/buildout.cfg
   buildout.hash.cfg
-  gowork.cfg
 
 versions = versions
 parts =
@@ -31,53 +30,62 @@ part = python3
 [yarn]
 <= yarn-1.22.10
 
+
+[go_github.com_grafana_grafana]
+<= go-git-package
+go.importpath = github.com/grafana/grafana
+repository    = https://github.com/grafana/grafana
+revision      = v7.4.3-0-g010f20c1c8
+
+[go_github.com_grafana_loki]
+<= go-git-package
+go.importpath = github.com/grafana/loki
+repository    = https://github.com/grafana/loki
+revision      = v2.1.0-188-g877f524c36
+
+[go_github.com_influxdata_influxdb]
+<= go-git-package
+go.importpath = github.com/influxdata/influxdb
+repository    = https://github.com/influxdata/influxdb
+revision      = v1.8.4-0-gbc8ec4384e
+
+[go_github.com_influxdata_telegraf]
+<= go-git-package
+go.importpath = github.com/influxdata/telegraf
+repository    = https://github.com/influxdata/telegraf
+revision      = v1.17.3-0-g24a552b90b
+
+
 [gowork]
-# All the softwares installed in the go workspace have "non standard" installation
-# methods, so we install them in specific parts with custom commands.
-# They will be installed because they are dependencies of ${gowork.goinstall}
 install =
+  ${go_github.com_grafana_loki:location}:./cmd/loki
+  ${go_github.com_grafana_loki:location}:./cmd/promtail
+  ${go_github.com_influxdata_telegraf:location}:./cmd/...
+  ${go_github.com_influxdata_influxdb:location}:./cmd/...
+
+# use recent go
+golang = ${golang1.16:location}
+
+# disable cgo, to prevent loki/promtail from using go-systemd
+environment =
+  CGO_ENABLED = 0
 
 telegraf-bin = ${:bin}/telegraf
 influx-bin = ${:bin}/influx
 influxd-bin = ${:bin}/influxd
 grafana-bin = ${:bin}/grafana-server
-grafana-homepath = ${go_github.com_grafana_grafana:location}
+grafana-homepath = ${grafana:homepath}
 loki-bin = ${:bin}/loki
 promtail-bin = ${:bin}/promtail
 
-# use recent go
-golang  = ${golang1.16:location}
 
-[gowork.goinstall]
-command = :
-depends =
-   ${influxdb-install:recipe}
-   ${telegraf-install:recipe}
-   ${grafana-install:recipe}
-   ${loki-install:recipe}
-   ${promtail-install:recipe}
-
-[influxdb-install]
-<= gowork.goinstall
-command = bash -c ". ${gowork:env.sh} && \
-   go install -v github.com/golang/dep/cmd/dep && \
-   cd ${gowork:directory}/src/github.com/influxdata/influxdb && \
-   go install ./..."
-update-command =
-
-[telegraf-install]
-<= gowork.goinstall
-command = bash -c ". ${gowork:env.sh} && \
-   go install -v github.com/golang/dep/cmd/dep && \
-   cd ${gowork:directory}/src/github.com/influxdata/telegraf && \
-   ${make:location}/bin/make &&
-   cp telegraf ${gowork:bin}"
-update-command =
-
-[grafana-install]
-<= gowork.goinstall
-command = bash -c ". ${gowork:env.sh} && \
-   cd ${gowork:directory}/src/github.com/grafana/grafana && \
+[grafana]
+recipe = plone.recipe.command
+command = bash -c "
+  cd ${:homepath} &&
+  . ${gowork:env.sh} &&
+  # Unlike the loki, grafana _needs_ CGO_ENABLED, so we override here
+  export CGO_ENABLED=1 &&
   go run build.go setup && \
   go run build.go build && \
   ${yarn:location}/bin/yarn install --pure-lockfile && \
@@ -87,28 +95,8 @@ command = bash -c ". ${gowork:env.sh} && \
   rm -rf ${buildout:directory}/.cache/Cypress/ && \
   rm -rf ${buildout:directory}/.cache/yarn/
   "
-update-command =
-
-[loki-install]
-<= gowork.goinstall
-# loki also uses nodejs
-command = bash -c "export PATH=${nodejs:location}/bin/:$PATH && \
-   . ${gowork:env.sh} && \
-   go install -v github.com/golang/dep/cmd/dep && \
-   cd ${gowork:directory}/src/github.com/grafana/loki && \
-   go install ./cmd/loki"
-update-command =
-
-[promtail-install]
-<= gowork.goinstall
-# CGO_ENABLED is to disable systemd support (did not compile in my case)
-command = bash -c "export CGO_ENABLED=0 && \
-   . ${gowork:env.sh} && \
-   go install -v github.com/golang/dep/cmd/dep && \
-   cd ${gowork:directory}/src/github.com/grafana/loki && \
-   go install ./cmd/promtail"
-update-command =
-
+homepath = ${go_github.com_grafana_grafana:location}
+stop-on-error = true
 
 [download-file-base]
 recipe = slapos.recipe.build:download