feat: make ttl & batch_size SUSET

[soedirgo]

What kind of change does this PR introduce?

feature

What is the current behavior?

Changing pg_net.ttl and pg_net.batch_size requires ALTER SYSTEM (which is SU-only) and a config reload.

What is the new behavior?

pg_net.ttl and pg_net.batch_size can be changed with ALTER ROLE ... SET ... + a config reload.

[soedirgo]

P.S. I'm unable to nix-shell on macOS:

❯ nix-shell --show-trace
error:
       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'nix-shell'
         whose name attribute is located at /nix/store/h37bdrm450d1whv8pfsv30wfpri0kir5-24.05/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'buildInputs' of derivation 'nix-shell'

         at /nix/store/h37bdrm450d1whv8pfsv30wfpri0kir5-24.05/pkgs/stdenv/generic/make-derivation.nix:378:7:

          377|       depsHostHost                = elemAt (elemAt dependencies 1) 0;
          378|       buildInputs                 = elemAt (elemAt dependencies 1) 1;
             |       ^
          379|       depsTargetTarget            = elemAt (elemAt dependencies 2) 0;

       … while evaluating derivation 'net-with-pathod'
         whose name attribute is located at /nix/store/h37bdrm450d1whv8pfsv30wfpri0kir5-24.05/pkgs/stdenv/generic/make-derivation.nix:331:7

       … while evaluating attribute 'text' of derivation 'net-with-pathod'

         at /nix/store/h37bdrm450d1whv8pfsv30wfpri0kir5-24.05/pkgs/build-support/trivial-builders/default.nix:103:16:

          102|       ({
          103|         inherit text executable checkPhase allowSubstitutes preferLocalBuild;
             |                ^
          104|         passAsFile = [ "text" ]

       … while evaluating derivation 'python3.7-mitmproxy-4.0.4'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/interpreters/python/mk-python-derivation.nix:105:3

       … while evaluating attribute 'nativeBuildInputs' of derivation 'python3.7-mitmproxy-4.0.4'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:217:11:

          216|           depsBuildBuild              = lib.elemAt (lib.elemAt dependencies 0) 0;
          217|           nativeBuildInputs           = lib.elemAt (lib.elemAt dependencies 0) 1;
             |           ^
          218|           depsBuildTarget             = lib.elemAt (lib.elemAt dependencies 0) 2;

       … while evaluating derivation 'python3-3.7.6'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:191:11

       … while evaluating attribute 'CPPFLAGS' of derivation 'python3-3.7.6'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/interpreters/python/cpython/default.nix:130:3:

          129|
          130|   CPPFLAGS = concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs);
             |   ^
          131|   LDFLAGS = concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs);

       … while calling anonymous lambda

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/interpreters/python/cpython/default.nix:130:41:

          129|
          130|   CPPFLAGS = concatStringsSep " " (map (p: "-I${getDev p}/include") buildInputs);
             |                                         ^
          131|   LDFLAGS = concatStringsSep " " (map (p: "-L${getLib p}/lib") buildInputs);

       … while evaluating derivation 'zlib-1.2.11'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/libraries/zlib/default.nix:18:3

       … while evaluating attribute 'src' of derivation 'zlib-1.2.11'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/libraries/zlib/default.nix:21:3:

           20|
           21|   src = fetchurl {
             |   ^
           22|     urls =

       … while evaluating derivation 'zlib-1.2.11.tar.gz'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/build-support/fetchurl/default.nix:119:3

       … while evaluating attribute 'mirrorsFile' of derivation 'zlib-1.2.11.tar.gz'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/build-support/fetchurl/default.nix:139:10:

          138|
          139|   inherit curlOpts showURLs mirrorsFile postFetch downloadToTemp executable;
             |          ^
          140|

       … while evaluating derivation 'mirrors-list'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/build-support/fetchurl/default.nix:14:7
       … while evaluating attribute 'stdenv' of derivation 'mirrors-list'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:201:18:

          200|           args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)];
          201|           inherit stdenv;
             |                  ^
          202|

       … while evaluating derivation 'stdenv'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/default.nix:84:14

       … while evaluating attribute 'initialPath' of derivation 'stdenv'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/default.nix:114:14:

          113|
          114|       inherit initialPath shell
             |              ^
          115|         defaultNativeBuildInputs defaultBuildInputs;

       … while evaluating derivation 'xz-5.2.4'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/tools/compression/xz/default.nix:4:3

       … while evaluating attribute 'src' of derivation 'xz-5.2.4'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/tools/compression/xz/default.nix:6:3:

            5|
            6|   src = fetchurl {
             |   ^
            7|     url = "https://tukaani.org/xz/${name}.tar.bz2";

       … while evaluating derivation 'xz-5.2.4.tar.bz2'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/build-support/fetchurl/default.nix:119:3

       … while evaluating attribute 'nativeBuildInputs' of derivation 'xz-5.2.4.tar.bz2'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:217:11:

          216|           depsBuildBuild              = lib.elemAt (lib.elemAt dependencies 0) 0;
          217|           nativeBuildInputs           = lib.elemAt (lib.elemAt dependencies 0) 1;
             |           ^
          218|           depsBuildTarget             = lib.elemAt (lib.elemAt dependencies 0) 2;

       … while evaluating derivation 'curl-7.68.0'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/tools/networking/curl/default.nix:31:3

       … while evaluating attribute 'configureFlags' of derivation 'curl-7.68.0'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:231:11:

          230|           # This parameter is sometimes a string, sometimes null, and sometimes a list, yuck
          231|           configureFlags = let inherit (lib) optional elem; in
             |           ^
          232|             (/**/ if lib.isString configureFlags then [configureFlags]

       … while evaluating derivation 'openssl-1.1.1f'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:191:11

       … while evaluating attribute 'nativeBuildInputs' of derivation 'openssl-1.1.1f'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/stdenv/generic/make-derivation.nix:217:11:

          216|           depsBuildBuild              = lib.elemAt (lib.elemAt dependencies 0) 0;
          217|           nativeBuildInputs           = lib.elemAt (lib.elemAt dependencies 0) 1;
             |           ^
          218|           depsBuildTarget             = lib.elemAt (lib.elemAt dependencies 0) 2;

       … while evaluating derivation 'perl-5.30.1'
         whose name attribute is located at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/interpreters/perl/default.nix:29:5

       … while evaluating attribute 'disallowedReferences' of derivation 'perl-5.30.1'

         at /nix/store/l561dnq1r5xc7g4jwcxpjd5czap64990-2020-04-20/pkgs/development/interpreters/perl/default.nix:41:5:

           40|
           41|     disallowedReferences = [ stdenv.cc ];
             |     ^
           42|

       error: cannot coerce null to a string

[steve-chavez]

P.S. I'm unable to nix-shell on macOS:
… while evaluating attribute 'nativeBuildInputs' of derivation 'python3.7-mitmproxy-4.0.4'

It's related to the pathod command, which is deprecated and likely has issues with newer python versions. I can clear that on #106 (comment).