chore: drop primer-rel8 and PostgreSQL support

.github/ISSUE_TEMPLATE/bug-report.yaml

@@ -64,7 +64,6 @@ body:
         - primer
         - primer-api
         - primer-service
-        - primer-rel8
         - primer-selda
         - primer-benchmark
         - Primer language prelude

Makefile

@@ -8,7 +8,6 @@ targets = build configure check test bench generate-fixtures docs clean realclea
 $(targets):
 	$(MAKE) -C primer $@
 	$(MAKE) -C primer-api $@
-	$(MAKE) -C primer-rel8 $@
 	$(MAKE) -C primer-selda $@
 	$(MAKE) -C primer-service $@
 	$(MAKE) -C primer-benchmark $@

bugreport.sh

@@ -244,26 +244,4 @@ else
 fi
 echo ""
 
-PSQL_COMMAND="$(command -v psql)"
-echo "PostgreSQL:"
-if ! [ -x "$PSQL_COMMAND" ]; then
-    echo "psql is not in the PATH."
-else
-    echo "psql path is: " "$PSQL_COMMAND"
-    PSQL_VERSION=$(psql --version)
-    echo "psql version is: " "$PSQL_VERSION"
-fi
-echo ""
-
-COLIMA_COMMAND="$(command -v colima)"
-echo "Colima:"
-if ! [ -x "$COLIMA_COMMAND" ]; then
-    echo "colima is not in the PATH."
-else
-    echo "colima path is: " "$COLIMA_COMMAND"
-    COLIMA_VERSION=$(colima version)
-    echo "colima version is: " "$COLIMA_VERSION"
-fi
-
-
 exit 0

cabal.project

@@ -3,7 +3,6 @@ index-state: 2023-05-20T00:00:00Z
 packages:
   primer
   primer-api
-  primer-rel8
   primer-selda
   primer-service
   primer-benchmark

docs/database.md

@@ -1,23 +1,9 @@
 # Database ops
 
 We use [Sqitch](https://sqitch.org/about/) to manage our database
-schemas, both for PostgreSQL and SQLite. Because these database
-engines are quite different, we require separate schemas for each. For
-general help on how to use Sqitch and a bit about how it works, see
-[the `sqitch` PostgreSQL
-tutorial](https://sqitch.org/docs/manual/sqitchtutorial/).
-
-Note: we do not use Sqitch for any PostgreSQL user or group
-permissions, nor any database-wide security settings in general. The
-reason for this is because we assume that for some
-PostgreSQL-compatible cloud database offerings, user provisioning and
-security settings may be managed out of band using the cloud
-provider's own APIs. Therefore, our Sqitch scripts assume that the
-PostgreSQL user who's running the scripts has all the permissions
-required to perform any operations included in those scripts, and that
-a [secure schema usage
-pattern](https://www.postgresql.org/docs/current/ddl-schemas.html#DDL-SCHEMAS-PATTERNS)
-has been configured out-of-band.
+schemas. For general help on how to use Sqitch and a bit about how it
+works, see [the `sqitch` SQLite
+tutorial](https://sqitch.org/docs/manual/sqitchtutorial-sqlite/).
 
 The following guide assumes you're running `sqitch` and the
 `primer-sqitch` helper script from the `nix develop` shell.

docs/developing.md

@@ -138,12 +138,3 @@ yourself. `primer-service` doesn't know how to deploy or migrate the
 database on its own. See the
 [`primer-service-entrypoint.sh`](../nix/pkgs/scripts/primer-service-entrypoint.sh)
 shell script for the commands that the Docker entrypoint runs.
-
-## Local development with PostgreSQL
-
-In addition to SQLite, `primer-service` also supports PostgreSQL for
-its program store. Though we recommend using SQLite for local
-development due to its much simpler setup, we do provide a collection
-of Nix-based tooling to make local PostgreSQL development as easy as
-we can. See the [PostgreSQL development documentation](postgresql.md)
-for details.

docs/development-guide-toc.md

@@ -25,6 +25,5 @@ the various packages' Haddocks.
 ## Advanced or specialized topics
 
 * [Primitives](primitives.md)
-* [Developing Primer with PostgreSQL](postgresql.md)
 * [Database ops](database.md)
 * [Benchmarking](benchmarking.md)

docs/project-overview.md

@@ -61,10 +61,8 @@ together implement a Primer language service:
   the two evaluators, and an API that exposes these features to other
   Haskell programs.
 
-* `primer-rel8` and `primer-selda` implement, respectively,
-  [PostgreSQL](https://www.postgresql.org) and
-  [SQLite](https://www.sqlite.org/) database bindings for the Primer
-  language server's program store.
+* `primer-selda` implements [SQLite](https://www.sqlite.org/) database
+  bindings for the Primer language server's program store.
 
 * `primer-service` adapts the `primer` Haskell API to an HTTP API
   (actually, [two different HTTP API's](http-apis.md)), so that it can