Simplifies reusing the launch script in other use-cases than the "official" Nixery image. Relates to nixery#166 Change-Id: Iaf1dff385ce270792253551081c1b2fca6400037 Reviewed-on: https://cl.tvl.fyi/c/depot/+/11046 Autosubmit: tazjin <tazjin@tvl.su> Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
		
			
				
	
	
		
			129 lines
		
	
	
	
		
			3.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			129 lines
		
	
	
	
		
			3.7 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
| # Copyright 2022 The TVL Contributors
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| # SPDX-License-Identifier: Apache-2.0
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| 
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| # This function header aims to provide compatibility between builds of
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| # Nixery taking place inside/outside of the TVL depot.
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| #
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| # In the future, Nixery will transition to using //nix/buildGo for its
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| # build system and this will need some major adaptations to support
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| # that.
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| { depot ? { nix.readTree.drvTargets = x: x; }
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| , pkgs ? import <nixpkgs> { }
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| , preLaunch ? ""
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| , extraPackages ? [ ]
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| , maxLayers ? 20
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| , commitHash ? null
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| , ...
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| }@args:
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| 
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| with pkgs;
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| 
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| let
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|   inherit (pkgs) buildGoModule lib;
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| 
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|   # Avoid extracting this from git until we have a way to plumb
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|   # through revision numbers.
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|   nixery-commit-hash = "depot";
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| in
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| depot.nix.readTree.drvTargets rec {
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|   # Implementation of the Nix image building logic
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|   nixery-prepare-image = import ./prepare-image { inherit pkgs; };
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| 
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|   # Include the Nixery website into the Nix store, unless its being
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|   # overridden to something else. Nixery will serve this as its front
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|   # page when visited from a browser.
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|   nixery-web = ./web;
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| 
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|   nixery-popcount = callPackage ./popcount { };
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| 
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|   # Build Nixery's Go code, resulting in the binaries used for various
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|   # bits of functionality.
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|   #
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|   # The server binary is wrapped to ensure that required environment
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|   # variables are set at runtime.
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|   nixery = buildGoModule rec {
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|     name = "nixery";
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|     src = ./.;
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|     doCheck = true;
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| 
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|     # Needs to be updated after every modification of go.mod/go.sum
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|     vendorHash = "sha256-io9NCeZmjCZPLmII3ajXIsBWbT40XiW8ncXOuUDabbo=";
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| 
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|     ldflags = [
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|       "-s"
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|       "-w"
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|       "-X"
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|       "main.version=${nixery-commit-hash}"
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|     ];
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| 
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|     nativeBuildInputs = [ makeWrapper ];
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|     postInstall = ''
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|       wrapProgram $out/bin/server \
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|         --set-default WEB_DIR "${nixery-web}" \
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|         --prefix PATH : ${nixery-prepare-image}/bin
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|     '';
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| 
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|     # Nixery is mirrored to Github at tazjin/nixery; this is
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|     # automatically updated from CI for canon builds.
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|     passthru.meta.ci.extraSteps.github = depot.tools.releases.filteredGitPush {
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|       filter = ":/tools/nixery";
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|       remote = "git@github.com:tazjin/nixery.git";
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|       ref = "refs/heads/master";
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|     };
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|   };
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| 
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|   # Wrapper script for the wrapper script (meta!) which configures
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|   # the container environment appropriately.
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|   #
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|   # Most importantly, sandboxing is disabled to avoid privilege
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|   # issues in containers.
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|   nixery-launch-script = writeShellScriptBin "nixery" ''
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|     set -e
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|     export PATH=${coreutils}/bin:$PATH
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|     export NIX_SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt
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|     mkdir -p /tmp
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| 
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|     # Create the build user/group required by Nix
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|     echo 'nixbld:x:30000:nixbld' >> /etc/group
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|     echo 'nixbld:x:30000:30000:nixbld:/tmp:/bin/bash' >> /etc/passwd
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|     echo 'root:x:0:0:root:/root:/bin/bash' >> /etc/passwd
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|     echo 'root:x:0:' >> /etc/group
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| 
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|     # Disable sandboxing to avoid running into privilege issues
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|     mkdir -p /etc/nix
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|     echo 'sandbox = false' >> /etc/nix/nix.conf
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| 
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|     # In some cases users building their own image might want to
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|     # customise something on the inside (e.g. set up an environment
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|     # for keys or whatever).
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|     #
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|     # This can be achieved by setting a 'preLaunch' script.
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|     ${preLaunch}
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| 
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|     exec ${nixery}/bin/server
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|   '';
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| 
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|   # Container image containing Nixery and Nix itself. This image can
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|   # be run on Kubernetes, published on AppEngine or whatever else is
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|   # desired.
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|   nixery-image = dockerTools.buildLayeredImage {
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|     name = "nixery";
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|     config.Cmd = [ "${nixery-launch-script}/bin/nixery" ];
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| 
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|     inherit maxLayers;
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|     contents = [
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|       bashInteractive
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|       cacert
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|       coreutils
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|       git
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|       gnutar
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|       gzip
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|       iana-etc
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|       nix
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|       nixery-prepare-image
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|       nixery-launch-script
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|       openssh
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|       zlib
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|     ] ++ extraPackages;
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|   };
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| }
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