From 52255d1825488e09977c3bae628d7d3d1e7fbbc7 Mon Sep 17 00:00:00 2001
From: Tom Prince <tom.prince@private.storage>
Date: Mon, 7 Feb 2022 14:34:18 -0700
Subject: [PATCH] Add a derivation that builds all three grids.
This is the derivation I use when running `nix store diff-closures` for the
weekly nixpkgs update.
The derivation also includes some attributes that are useful for exploring the
various grid configurations in the nix repl.
---
default.nix | 5 +++++
morph/default.nix | 32 ++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
create mode 100644 morph/default.nix
diff --git a/default.nix b/default.nix
index 8b605281..35bd691f 100644
--- a/default.nix
+++ b/default.nix
@@ -11,4 +11,9 @@
# Run some unit tests of the Nix that ties all of these things together (ie,
# PrivateStorageio-internal library functionality).
unit-tests = pkgs.callPackage ./nixos/unit-tests.nix { };
+
+ # Build all grids into a single derivation. The derivation also has several
+ # attributes that are useful for exploring the configuration in a repl or
+ # with eval.
+ morph = pkgs.callPackage ./morph {};
}
diff --git a/morph/default.nix b/morph/default.nix
new file mode 100644
index 00000000..52cf7d10
--- /dev/null
+++ b/morph/default.nix
@@ -0,0 +1,32 @@
+{ pkgs ? import ../nixpkgs.nix {} }:
+let
+ lib = pkgs.lib;
+ gridlib = import ./lib;
+ inherit (gridlib.pkgs) ourpkgs;
+ grids-path = "${builtins.toString ./.}/grid";
+ grid-configs = lib.mapAttrs (n: v: grids-path + "/${n}/grid.nix") (lib.filterAttrs (n: v: v == "directory") (builtins.readDir grids-path));
+ # It would be useful if morph exposed this as a function.
+ # https://github.com/DBCDK/morph/pull/166
+ morph-eval = networkExpr: (import "${pkgs.morph.lib}/eval-machines.nix") { inherit networkExpr; };
+ grids = lib.mapAttrs (n: v: (morph-eval v)) grid-configs;
+ # Derivation with symlinks to the morph output for each grid.
+ output = pkgs.runCommand "privatestorage-morph"
+ { preferLocalBuild = true; allowSubstitutes = false; passthru = { inherit gridlib ourpkgs grids; }; }
+ ''
+ mkdir $out
+ ${lib.concatStringsSep "\n" (
+ lib.mapAttrsToList (
+ name: morph:
+ let
+ output = morph.machines {
+ # It would be nice if we didn't need to write this data to a file.
+ # https://github.com/DBCDK/morph/pull/186
+ argsFile = pkgs.writeText "args" (builtins.toJSON { Names = lib.attrNames morph.nodes; });
+ };
+ in
+ ''
+ ln -s ${output} $out/${lib.escapeShellArg name}
+ ''
+ ) grids
+ )}'';
+in output
--
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