go: re-do the entire thing

This is a mega-change, but attempting to split this up further is
probably not worth the effort.

Summary:

1. Bump up bazel, rules_go, and others.
2. Switch to new go target naming (bye bye go_default_library)
3. Move go deps to go.mod/go.sum, use make gazelle generate from that
4. Bump up Python deps a bit

And also whatever was required to actually get things to work - loads of
small useless changes.

Tested to work on NixOS and Ubuntu 20.04:

   $ bazel build //...
   $ bazel test //...

Change-Id: I8364bdaa1406b9ae4d0385a6b607f3e7989f98a9
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1583
Reviewed-by: q3k <q3k@hackerspace.pl>
diff --git a/go/mirko/BUILD.bazel b/go/mirko/BUILD.bazel
index 4a83104..8069b7d 100644
--- a/go/mirko/BUILD.bazel
+++ b/go/mirko/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
-    name = "go_default_library",
+    name = "mirko",
     srcs = [
         "kubernetes.go",
         "mirko.go",
@@ -13,22 +13,22 @@
     importpath = "code.hackerspace.pl/hscloud/go/mirko",
     visibility = ["//visibility:public"],
     deps = [
-        "//go/pki:go_default_library",
-        "//go/statusz:go_default_library",
-        "@com_github_gchaincl_sqlhooks//:go_default_library",
-        "@com_github_golang_glog//:go_default_library",
-        "@com_github_golang_migrate_migrate_v4//source:go_default_library",
-        "@io_k8s_client_go//kubernetes:go_default_library",
-        "@io_k8s_client_go//rest:go_default_library",
+        "//go/pki",
+        "//go/statusz",
+        "@com_github_gchaincl_sqlhooks//:sqlhooks",
+        "@com_github_golang_glog//:glog",
+        "@com_github_golang_migrate_migrate_v4//source",
+        "@io_k8s_client_go//kubernetes",
+        "@io_k8s_client_go//rest",
         "@org_golang_google_grpc//:go_default_library",
-        "@org_golang_google_grpc//reflection:go_default_library",
-        "@org_golang_x_net//trace:go_default_library",
+        "@org_golang_google_grpc//reflection",
+        "@org_golang_x_net//trace",
     ],
 )
 
 go_test(
-    name = "go_default_test",
+    name = "mirko_test",
     srcs = ["revproxy_test.go"],
-    embed = [":go_default_library"],
-    deps = ["@io_k8s_client_go//kubernetes:go_default_library"],
+    embed = [":mirko"],
+    deps = ["@io_k8s_client_go//kubernetes"],
 )
diff --git a/go/mirko/tests/sql/BUILD.bazel b/go/mirko/tests/sql/BUILD.bazel
index 5831dcd..aab01df 100644
--- a/go/mirko/tests/sql/BUILD.bazel
+++ b/go/mirko/tests/sql/BUILD.bazel
@@ -4,7 +4,16 @@
     name = "go_default_test",
     srcs = ["sql_test.go"],
     deps = [
-        "//go/mirko/tests/sql/migrations:go_default_library",
-        "@com_github_golang_migrate_migrate_v4//database/sqlite3:go_default_library",
+        "//go/mirko/tests/sql/migrations",
+        "@com_github_golang_migrate_migrate_v4//database/sqlite3",
+    ],
+)
+
+go_test(
+    name = "sql_test",
+    srcs = ["sql_test.go"],
+    deps = [
+        "//go/mirko/tests/sql/migrations",
+        "@com_github_golang_migrate_migrate_v4//database/sqlite3",
     ],
 )
diff --git a/go/mirko/tests/sql/migrations/BUILD.bazel b/go/mirko/tests/sql/migrations/BUILD.bazel
index 585ea48..5d0a98c 100644
--- a/go/mirko/tests/sql/migrations/BUILD.bazel
+++ b/go/mirko/tests/sql/migrations/BUILD.bazel
@@ -4,12 +4,12 @@
 go_embed_data(
     name = "migrations_data",
     srcs = glob(["*.sql"]),
-    package = "migrations",
     flatten = True,
+    package = "migrations",
 )
 
 go_library(
-    name = "go_default_library",
+    name = "migrations",
     srcs = [
         "migrations.go",
         ":migrations_data",  # keep
@@ -17,7 +17,7 @@
     importpath = "code.hackerspace.pl/hscloud/go/mirko/tests/sql/migrations",
     visibility = ["//go/mirko/tests/sql:__subpackages__"],
     deps = [
-        "//go/mirko:go_default_library",
-        "@com_github_golang_migrate_migrate_v4//:go_default_library",
+        "//go/mirko",
+        "@com_github_golang_migrate_migrate_v4//:migrate",
     ],
 )
diff --git a/go/pki/BUILD.bazel b/go/pki/BUILD.bazel
index f2eae41..8f3d38b 100644
--- a/go/pki/BUILD.bazel
+++ b/go/pki/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
-    name = "go_default_library",
+    name = "pki",
     srcs = [
         "grpc.go",
         "locate.go",
@@ -9,19 +9,19 @@
     importpath = "code.hackerspace.pl/hscloud/go/pki",
     visibility = ["//visibility:public"],
     deps = [
-        "@com_github_golang_glog//:go_default_library",
+        "@com_github_golang_glog//:glog",
         "@org_golang_google_grpc//:go_default_library",
-        "@org_golang_google_grpc//codes:go_default_library",
-        "@org_golang_google_grpc//credentials:go_default_library",
-        "@org_golang_google_grpc//peer:go_default_library",
-        "@org_golang_google_grpc//status:go_default_library",
-        "@org_golang_x_net//trace:go_default_library",
+        "@org_golang_google_grpc//codes",
+        "@org_golang_google_grpc//credentials",
+        "@org_golang_google_grpc//peer",
+        "@org_golang_google_grpc//status",
+        "@org_golang_x_net//trace",
     ],
 )
 
 go_test(
-    name = "go_default_test",
+    name = "pki_test",
     srcs = ["grpc_test.go"],
-    embed = [":go_default_library"],
-    deps = ["@com_github_go_test_deep//:go_default_library"],
+    embed = [":pki"],
+    deps = ["@com_github_go_test_deep//:deep"],
 )
diff --git a/go/statusz/BUILD.bazel b/go/statusz/BUILD.bazel
index 4434b95..9becefc 100644
--- a/go/statusz/BUILD.bazel
+++ b/go/statusz/BUILD.bazel
@@ -1,21 +1,21 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
-    name = "go_default_library",
+    name = "statusz",
     srcs = [
         "load.go",
         "statusz.go",
     ],
     importpath = "code.hackerspace.pl/hscloud/go/statusz",
     visibility = ["//visibility:public"],
-    deps = [
-        "@com_github_golang_glog//:go_default_library",
-        "@com_github_shirou_gopsutil//load:go_default_library",
-    ],
     x_defs = {
         "code.hackerspace.pl/hscloud/go/statusz.GitCommit": "{STABLE_GIT_COMMIT}",
         "code.hackerspace.pl/hscloud/go/statusz.GitVersion": "{STABLE_GIT_VERSION}",
         "code.hackerspace.pl/hscloud/go/statusz.Builder": "{STABLE_BUILDER}",
         "code.hackerspace.pl/hscloud/go/statusz.BuildTimestamp": "{BUILD_TIMESTAMP}",
     },
+    deps = [
+        "@com_github_golang_glog//:glog",
+        "@com_github_shirou_gopsutil//load",
+    ],
 )
diff --git a/go/workspace/BUILD.bazel b/go/workspace/BUILD.bazel
index 222d3c7..0d8405a 100644
--- a/go/workspace/BUILD.bazel
+++ b/go/workspace/BUILD.bazel
@@ -1,7 +1,7 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
-    name = "go_default_library",
+    name = "workspace",
     srcs = [
         "nix.go",
         "workspace.go",
@@ -11,7 +11,7 @@
 )
 
 go_test(
-    name = "go_default_test",
+    name = "workspace_test",
     srcs = ["nix_test.go"],
     data = [
         ":exports.nix",
@@ -19,6 +19,6 @@
         "//:default.nix",
         "//nix/readtree:default.nix",
     ],
-    embed = [":go_default_library"],
-    deps = ["@com_github_google_go_cmp//cmp:go_default_library"],
+    embed = [":workspace"],
+    deps = ["@com_github_google_go_cmp//cmp"],
 )