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nix: Disable building profiled or dynamic libraries by default

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We never need dynamic haskell libraries, because even the dynamic builds
only dynamically link non-haskell dependencies, but always link haskell
dependencies statically.

Profiled libraries are only required when running the memory test, so
explicitly enable them for the profiled package.

This also means, that we don't need to hide the memory test behind a
feature flag anymore. The reason always was assumed to be the big number
of rebuilds required for it. I assume ever since we moved off of
static-haskell-nix and back to nixpkgs-based builds, we have been
building profiled libraries for all our dependencies anway.
This commit is contained in:
Wolfgang Walther
2025-03-22 19:37:03 +00:00
parent 57d11c7914
commit 2b91df8004
3 changed files with 33 additions and 39 deletions
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nix/README.md
+19 -19
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@@ -72,17 +72,17 @@ The PostgREST utilities available in `nix-shell` all have names that begin with
```bash
# Note: The utilities listed here might not be up to date.
[nix-shell]$ postgrest-<tab>
postgrest-build postgrest-parallel-curl
postgrest-check postgrest-profiled-run
postgrest-clean postgrest-push-cachix
postgrest-coverage postgrest-release
postgrest-coverage-draft-overlay postgrest-repl
postgrest-docs-build postgrest-run
postgrest-docs-check postgrest-style
postgrest-docs-dictcheck postgrest-style-check
postgrest-docs-linkcheck postgrest-test-big-schema
postgrest-docs-render postgrest-test-doctests
postgrest-docs-serve postgrest-test-io
postgrest-build postgrest-profiled-run
postgrest-check postgrest-push-cachix
postgrest-clean postgrest-release
postgrest-coverage postgrest-repl
postgrest-coverage-draft-overlay postgrest-run
postgrest-docs-build postgrest-style
postgrest-docs-check postgrest-style-check
postgrest-docs-dictcheck postgrest-test-big-schema
postgrest-docs-linkcheck postgrest-test-doctests
postgrest-docs-render postgrest-test-io
postgrest-docs-serve postgrest-test-memory
postgrest-docs-spellcheck postgrest-test-replica
postgrest-dump-minimal-imports postgrest-test-spec
postgrest-dump-schema postgrest-test-spec-idempotence
@@ -98,27 +98,27 @@ postgrest-loadtest postgrest-with-postgresql-16
postgrest-loadtest-against postgrest-with-postgresql-17
postgrest-loadtest-report postgrest-with-slow-pg
postgrest-nixpkgs-upgrade postgrest-with-slow-postgrest
postgrest-parallel-curl
...
[nix-shell]$
```
Some additional modules like `memory` and `docker`
have large dependencies that would need to be built before the shell becomes
The `docker` module has large dependencies to be build before the shell becomes
available, which could take an especially long time if the cachix binary cache
is not used. You can activate those by passing a flag to `nix-shell` with
`nix-shell --arg <module> true`. This will make the respective utilities available:
is not used. You can activate it by passing a flag to `nix-shell` with
`nix-shell --arg docker true`. This will make the respective utilities available:
```bash
$ nix-shell --arg memory true
[nix-shell]$ postgrest-test-m<tab>
postgrest-test-memory
$ nix-shell --arg docker true
[nix-shell]$ postgrest-docker-<tab>
postgrest-docker-load
...
```
Note that `postgrest-test-memory` is now also available.
Note that `postgrest-docker-load` is now also available.
To run one-off commands, you can also use `nix-shell --run <command>`, which
will launch the Nix shell, run that one command and exit. Note that the tab