update cppjsonnet and depend on a specific commit of jsonnet

This changes the bazel module dependencies so that the C++ jsonnet
repo dependency (which is actually used as the source for the
standard library and nothing else in the Bazel build) comes from
a specific commit of the jsonnet repo, rather than depending on
the 'published' jsonnet 0.20.0.

The two repos are tightly coupled anyway so I think this more
accurately reflects the situation. Particularly since the C++ repo
is also linked (at a specific commit) as a git submodule, which
is used for non-Bazel build and testing.

Author: johnbartholomew

Diff for: MODULE.bazel

@@ -1,7 +1,22 @@
 module(name = "jsonnet_go", version = "0.0.0")
 
+http_archive = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+# NB: update_cpp_jsonnet.sh looks for these.
+CPP_JSONNET_SHA256 = "e7d14d8ad65dc334b9a9f3bd1c542a82b3b80029860a8d78fd829b23d0e9845b"
+CPP_JSONNET_GITHASH = "5a4e8e34cc1fe841bdebb983646b9b9ae8fa8ca4"
+
+# We don't use a normal bazel_dep reference for the cpp_jsonnet module,
+# because we want to pin to the specific jsonnet commit (which might not
+# even exactly match a released version).
+http_archive(
+    name = "cpp_jsonnet",
+    sha256 = CPP_JSONNET_SHA256,
+    strip_prefix = "jsonnet-%s" % CPP_JSONNET_GITHASH,
+    urls = ["https://github.com/google/jsonnet/archive/%s.tar.gz" % CPP_JSONNET_GITHASH],
+)
+
 bazel_dep(name = "gazelle", version = "0.41.0", repo_name = "bazel_gazelle")
-bazel_dep(name = "jsonnet", version = "0.20.0", repo_name = "cpp_jsonnet")
 bazel_dep(name = "rules_go", version = "0.48.0", repo_name = "io_bazel_rules_go")
 
 go_deps = use_extension("@bazel_gazelle//:extensions.bzl", "go_deps")

Diff for: bazel/repositories.bzl

@@ -4,8 +4,8 @@ load(
 )
 
 # NB: update_cpp_jsonnet.sh looks for these.
-CPP_JSONNET_SHA256 = "9e545f17b614c89d40d1f58d7f8fceded4cc93d1d29edfd8a93833b61201fd20"
-CPP_JSONNET_GITHASH = "4487bfb8ba7ed7a3d91d79d4a1aa2205e7839558"
+CPP_JSONNET_SHA256 = "e7d14d8ad65dc334b9a9f3bd1c542a82b3b80029860a8d78fd829b23d0e9845b"
+CPP_JSONNET_GITHASH = "5a4e8e34cc1fe841bdebb983646b9b9ae8fa8ca4"
 
 def jsonnet_go_repositories():
     http_archive(

Diff for: cpp-jsonnet

@@ -17,10 +17,11 @@ sha256=$(curl -fL https://github.com/google/jsonnet/archive/$hash.tar.gz | shasu
 sed -i.bak \
     -e "s/CPP_JSONNET_SHA256 = .*/CPP_JSONNET_SHA256 = \"$sha256\"/;" \
     -e "s/CPP_JSONNET_GITHASH = .*/CPP_JSONNET_GITHASH = \"$hash\"/;" \
-    bazel/repositories.bzl
+    bazel/repositories.bzl MODULE.bazel
 
 # NB: macOS sed doesn't support -i without arg. This is the easy workaround.
 rm bazel/repositories.bzl.bak
+rm MODULE.bazel.bak
 
 set +x
 echo