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postgresql: always build with JIT enabled

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This changes the build to always enable JIT - but to only enable it at
run-time, when required. This keeps the runtime closure small without
JIT, but allows enabling it without a rebuild. We can do this, because
JIT is actually built as a shared module, which is loaded at run-time.
We put it into a -jit output and only link it into the environment when
requested.

Under the hood, this uses withPackages and adds the "JIT package" -
thus, to be able to use withPackages on top of that, we also need to be
able to apply withPackages repeatedly.

This cuts down the number of NixOS tests in half, because we don't need
to run it for every version with and without JIT anymore. There really
is no point in running everything with llvmjit.so in place, when the
queries are not making use of it anyway.

Also, we only need to build each extension once and not twice, further
reducing the number of rebuilds required for PRs touching postgresql.
This commit is contained in:
Wolfgang Walther 2025-03-21 18:42:08 +01:00
parent dcb7a17994
commit dd5fd6cc22
No known key found for this signature in database
GPG key ID: B39893FA5F65CAE1
16 changed files with 125 additions and 86 deletions
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1
nixos/tests/postgresql/anonymizer.nix
View file

@ -20,7 +20,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions = ps: [ ps.anonymizer ];
settings.shared_preload_libraries = [ "anon" ];
};

1
nixos/tests/postgresql/citus.nix
View file

@ -35,7 +35,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions =
ps: with ps; [
citus

1
nixos/tests/postgresql/pgjwt.nix
View file

@ -24,7 +24,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions =
ps: with ps; [
pgjwt

1
nixos/tests/postgresql/pgvecto-rs.nix
View file

@ -38,7 +38,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions =
ps: with ps; [
pgvecto-rs

1
nixos/tests/postgresql/postgresql-jit.nix
View file

@ -51,5 +51,4 @@ let
in
genTests {
inherit makeTestFor;
filter = n: _: lib.hasSuffix "_jit" n;
}

1
nixos/tests/postgresql/postgresql-tls-client-cert.nix
View file

@ -51,7 +51,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
enableTCPIP = true;
ensureUsers = [
{

1
nixos/tests/postgresql/postgresql-wal-receiver.nix
View file

@ -32,7 +32,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
settings = {
max_replication_slots = 10;
max_wal_senders = 10;

1
nixos/tests/postgresql/postgresql.nix
View file

@ -54,7 +54,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
# TODO(@Ma27) split this off into its own VM test and move a few other
# extension tests to use postgresqlTestExtension.
extensions = ps: with ps; [ plv8 ];

1
nixos/tests/postgresql/timescaledb.nix
View file

@ -54,7 +54,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions =
ps: with ps; [
timescaledb

1
nixos/tests/postgresql/tsja.nix
View file

@ -21,7 +21,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions =
ps: with ps; [
tsja

1
nixos/tests/postgresql/wal2json.nix
View file

@ -17,7 +17,6 @@ let
services.postgresql = {
inherit package;
enable = true;
enableJIT = lib.hasInfix "-jit-" package.name;
extensions = with package.pkgs; [ wal2json ];
settings = {
wal_level = "logical";

4
pkgs/by-name/pg/pg_checksums/package.nix
View file

@ -1,13 +1,13 @@
{
lib,
stdenv,
clangStdenv,
fetchFromGitHub,
libxslt,
docbook_xsl,
postgresql,
}:
stdenv.mkDerivation rec {
clangStdenv.mkDerivation rec {
pname = "pg_checksums";
version = "1.2";

6
pkgs/by-name/pg/pgcopydb/package.nix
View file

@ -1,6 +1,6 @@
{
lib,
stdenv,
clangStdenv,
fetchFromGitHub,
libkrb5,
openssl,
@ -13,7 +13,7 @@
zlib,
}:
stdenv.mkDerivation (finalAttrs: {
clangStdenv.mkDerivation (finalAttrs: {
pname = "pgcopydb";
version = "0.15";
@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
sqlite
zlib
]
++ lib.optionals stdenv.hostPlatform.isLinux [
++ lib.optionals clangStdenv.hostPlatform.isLinux [
pam
];

11
pkgs/servers/sql/postgresql/default.nix
View file

@ -22,12 +22,10 @@ let
version: path:
let
attrName = if jitSupport then "${version}_jit" else version;
postgresql = import path { inherit self; };
attrValue = if jitSupport then postgresql.withJIT else postgresql.withoutJIT;
in
self.lib.nameValuePair attrName (
import path {
inherit jitSupport self;
}
)
self.lib.nameValuePair attrName attrValue
) versions;
libpq = self.callPackage ./libpq.nix { };
@ -35,7 +33,8 @@ let
in
{
# variations without and with JIT
postgresqlVersions = mkAttributes false // mkAttributes true;
postgresqlVersions = mkAttributes false;
postgresqlJitVersions = mkAttributes true;
inherit libpq;
}

176
pkgs/servers/sql/postgresql/generic.nix
View file

@ -66,7 +66,11 @@ let
icu,
# JIT
jitSupport, # not default on purpose, this is set via "_jit or not" attributes
jitSupport ?
stdenv.hostPlatform.canExecute stdenv.buildPlatform
# Building with JIT in pkgsStatic fails like this:
# fatal error: 'stdio.h' file not found
&& !stdenv.hostPlatform.isStatic,
llvmPackages,
nukeReferences,
overrideCC,
@ -135,10 +139,8 @@ let
dlSuffix = if olderThan "16" then ".so" else stdenv.hostPlatform.extensions.sharedLibrary;
pname = "postgresql";
stdenv' =
if jitSupport && !stdenv.cc.isClang then
if !stdenv.cc.isClang then
overrideCC llvmPackages.stdenv (
llvmPackages.stdenv.cc.override {
# LLVM bintools are not used by default, but are needed to make -flto work below.
@ -150,7 +152,7 @@ let
in
stdenv'.mkDerivation (finalAttrs: {
inherit version;
pname = pname + lib.optionalString jitSupport "-jit";
pname = "postgresql";
src = fetchFromGitHub {
owner = "postgres";
@ -162,8 +164,6 @@ let
__structuredAttrs = true;
hardeningEnable = lib.optionals (!stdenv'.cc.isClang) [ "pie" ];
outputs =
[
"out"
@ -172,51 +172,67 @@ let
"lib"
"man"
]
++ lib.optionals jitSupport [ "jit" ]
++ lib.optionals perlSupport [ "plperl" ]
++ lib.optionals pythonSupport [ "plpython3" ]
++ lib.optionals tclSupport [ "pltcl" ];
outputChecks = {
out = {
disallowedReferences = [
"dev"
"doc"
"man"
];
disallowedRequisites = [
stdenv'.cc
llvmPackages.llvm.out
] ++ (map lib.getDev (builtins.filter (drv: drv ? "dev") finalAttrs.buildInputs));
};
lib = {
disallowedReferences = [
"out"
"dev"
"doc"
"man"
];
disallowedRequisites = [
stdenv'.cc
llvmPackages.llvm.out
] ++ (map lib.getDev (builtins.filter (drv: drv ? "dev") finalAttrs.buildInputs));
};
outputChecks =
{
out = {
disallowedReferences = [
"dev"
"doc"
"man"
] ++ lib.optionals jitSupport [ "jit" ];
disallowedRequisites = [
stdenv'.cc
llvmPackages.llvm.out
] ++ (map lib.getDev (builtins.filter (drv: drv ? "dev") finalAttrs.buildInputs));
};
doc = {
disallowedReferences = [
"out"
"dev"
"man"
];
};
lib = {
disallowedReferences = [
"out"
"dev"
"doc"
"man"
] ++ lib.optionals jitSupport [ "jit" ];
disallowedRequisites = [
stdenv'.cc
llvmPackages.llvm.out
] ++ (map lib.getDev (builtins.filter (drv: drv ? "dev") finalAttrs.buildInputs));
};
man = {
disallowedReferences = [
"out"
"dev"
"doc"
];
doc = {
disallowedReferences = [
"out"
"dev"
"man"
] ++ lib.optionals jitSupport [ "jit" ];
};
man = {
disallowedReferences = [
"out"
"dev"
"doc"
] ++ lib.optionals jitSupport [ "jit" ];
};
}
// lib.optionalAttrs jitSupport {
jit = {
disallowedReferences = [
"dev"
"doc"
"man"
];
disallowedRequisites = [
stdenv'.cc
llvmPackages.llvm.out
] ++ (map lib.getDev (builtins.filter (drv: drv ? "dev") finalAttrs.buildInputs));
};
};
};
strictDeps = true;
@ -271,9 +287,7 @@ let
# flags will remove unused sections from all shared libraries and binaries - including
# those paths. This avoids a lot of circular dependency problems with different outputs,
# and allows splitting them cleanly.
CFLAGS =
"-fdata-sections -ffunction-sections"
+ (if stdenv'.cc.isClang then " -flto" else " -fmerge-constants -Wl,--gc-sections");
CFLAGS = "-fdata-sections -ffunction-sections -flto";
}
// lib.optionalAttrs perlSupport { PERL = lib.getExe perl; }
// lib.optionalAttrs pythonSupport { PYTHON = lib.getExe python3; }
@ -364,11 +378,25 @@ let
installTargets = [ "install-world" ];
postPatch = ''
substituteInPlace "src/Makefile.global.in" --subst-var out
substituteInPlace "src/common/config_info.c" --subst-var dev
cat ${./pg_config.env.mk} >> src/common/Makefile
'';
postPatch =
''
substituteInPlace "src/Makefile.global.in" --subst-var out
substituteInPlace "src/common/config_info.c" --subst-var dev
cat ${./pg_config.env.mk} >> src/common/Makefile
''
# This check was introduced upstream to prevent calls to "exit" inside libpq.
# However, this doesn't work reliably with static linking, see this and following:
# https://postgr.es/m/flat/20210703001639.GB2374652%40rfd.leadboat.com#52584ca4bd3cb9dac376f3158c419f97
# Thus, disable the check entirely, as it would currently fail with this:
# > libpq.so.5.17: U atexit
# > libpq.so.5.17: U pthread_exit
# > libpq must not be calling any function which invokes exit
# Don't mind the fact that this checks libpq.**so** in pkgsStatic - that's correct, since PostgreSQL
# still needs a shared library internally.
+ lib.optionalString (atLeast "15" && stdenv'.hostPlatform.isStatic) ''
substituteInPlace src/interfaces/libpq/Makefile \
--replace-fail "echo 'libpq must not be calling any function which invokes exit'; exit 1;" "echo;"
'';
postInstall =
''
@ -415,6 +443,9 @@ let
# Stop lib depending on the -dev output of llvm
remove-references-to -t ${llvmPackages.llvm.dev} "$out/lib/llvmjit${dlSuffix}"
moveToOutput "lib/bitcode" "$jit"
moveToOutput "lib/llvmjit*" "$jit"
''
+ lib.optionalString stdenv'.hostPlatform.isDarwin ''
# The darwin specific Makefile for PGXS contains a reference to the postgres
@ -466,17 +497,14 @@ let
passthru =
let
this = self.callPackage generic args;
jitToggle = this.override {
jitSupport = !jitSupport;
};
in
{
inherit dlSuffix;
psqlSchema = lib.versions.major version;
withJIT = if jitSupport then this else jitToggle;
withoutJIT = if jitSupport then jitToggle else this;
withJIT = this.withPackages (_: [ this.jit ]);
withoutJIT = this;
pkgs =
let
@ -586,18 +614,38 @@ let
inherit installedExtensions;
inherit (postgresql)
pg_config
pkgs
psqlSchema
version
;
withJIT = postgresqlWithPackages {
inherit buildEnv lib makeBinaryWrapper;
postgresql = postgresql.withJIT;
} f;
inherit
buildEnv
lib
makeBinaryWrapper
postgresql
;
} (_: installedExtensions ++ [ postgresql.jit ]);
withoutJIT = postgresqlWithPackages {
inherit buildEnv lib makeBinaryWrapper;
postgresql = postgresql.withoutJIT;
} f;
inherit
buildEnv
lib
makeBinaryWrapper
postgresql
;
} (_: lib.remove postgresql.jit installedExtensions);
withPackages =
f':
postgresqlWithPackages {
inherit
buildEnv
lib
makeBinaryWrapper
postgresql
;
} (ps: installedExtensions ++ f' ps);
};
};

3
pkgs/top-level/all-packages.nix
View file

@ -12455,6 +12455,7 @@ with pkgs;
inherit (import ../servers/sql/postgresql pkgs)
postgresqlVersions
postgresqlJitVersions
libpq
;
@ -12464,7 +12465,9 @@ with pkgs;
postgresql_15
postgresql_16
postgresql_17
;
inherit (postgresqlJitVersions)
postgresql_13_jit
postgresql_14_jit
postgresql_15_jit