260 lines
7.7 KiB
Nix
260 lines
7.7 KiB
Nix
let
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lib = import ./lib;
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pkgs = import <nixpkgs> { overlays = [(import ./krebs/5pkgs)]; };
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#
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# high level commands
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#
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cmds.deploy = pkgs.withGetopt {
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force-populate = { default = /* sh */ "false"; switch = true; };
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quiet = { default = /* sh */ "false"; switch = true; };
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source_file = {
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default = /* sh */ "$user/1systems/$system/source.nix";
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long = "source";
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};
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system = {};
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target.default = /* sh */ "$system";
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user.default = /* sh */ "$LOGNAME";
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} (opts: pkgs.writeDash "cmds.deploy" ''
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set -efu
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. ${init.env}
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. ${init.proxy "deploy" opts}
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# Use system's nixos-rebuild, which is not self-contained
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export PATH=/run/current-system/sw/bin
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exec ${utils.with-whatsupnix} \
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nixos-rebuild switch \
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--show-trace \
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-I "$target_path"
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'');
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cmds.install = pkgs.withGetopt {
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force-populate = { default = /* sh */ "false"; switch = true; };
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quiet = { default = /* sh */ "false"; switch = true; };
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source_file = {
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default = /* sh */ "$user/1systems/$system/source.nix";
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long = "source";
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};
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system = {};
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target = {};
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user.default = /* sh */ "$LOGNAME";
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} (opts: pkgs.writeBash "cmds.install" ''
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set -efu
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. ${init.env}
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if \test "''${using_proxy-}" != true; then
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${pkgs.openssh}/bin/ssh \
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-o StrictHostKeyChecking=no \
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-o UserKnownHostsFile=/dev/null \
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"$target_user@$target_host" -p "$target_port" \
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env target_path=$(quote "$target_path") \
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sh -s prepare < ${./krebs/4lib/infest/prepare.sh}
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# TODO inline prepare.sh?
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fi
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. ${init.proxy "install" opts}
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# Reset PATH because we need access to nixos-install.
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# TODO provide nixos-install instead of relying on prepare.sh
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export PATH="$OLD_PATH"
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# these variables get defined by nix-shell (i.e. nix-build) from
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# XDG_RUNTIME_DIR and reference the wrong directory (/run/user/0),
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# which only exists on / and not at /mnt.
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export NIX_BUILD_TOP=/tmp
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export TEMPDIR=/tmp
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export TEMP=/tmp
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export TMPDIR=/tmp
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export TMP=/tmp
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export XDG_RUNTIME_DIR=/tmp
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export NIXOS_CONFIG="$target_path/nixos-config"
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cd
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exec nixos-install
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'');
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cmds.test = pkgs.withGetopt {
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force-populate = { default = /* sh */ "false"; switch = true; };
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quiet = { default = /* sh */ "false"; switch = true; };
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source_file = {
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default = /* sh */ "$user/1systems/$system/source.nix";
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long = "source";
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};
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system = {};
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target = {};
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user.default = /* sh */ "$LOGNAME";
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} (opts: pkgs.writeDash "cmds.test" /* sh */ ''
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set -efu
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export dummy_secrets=true
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. ${init.env}
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. ${init.proxy "test" opts}
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exec ${utils.build} config.system.build.toplevel
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'');
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#
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# low level commands
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#
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# usage: get-source SOURCE_FILE
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cmds.get-source = pkgs.writeDash "cmds.get-source" ''
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set -efu
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exec ${pkgs.nix}/bin/nix-instantiate \
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--eval \
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--json \
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--readonly-mode \
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--show-trace \
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--strict \
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"$1"
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'';
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# usage: parse-target [--default=TARGET] TARGET
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# TARGET = [USER@]HOST[:PORT][/PATH]
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cmds.parse-target = pkgs.withGetopt {
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default_target = {
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long = "default";
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short = "d";
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};
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} (opts: pkgs.writeDash "cmds.parse-target" ''
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set -efu
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target=$1; shift
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for arg; do echo "$0: bad argument: $arg" >&2; done
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if \test $# != 0; then exit 2; fi
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exec ${pkgs.jq}/bin/jq \
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-enr \
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--arg default_target "$default_target" \
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--arg target "$target" \
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-f ${pkgs.writeText "cmds.parse-target.jq" ''
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def parse: match("^(?:([^@]+)@)?([^:/]+)?(?::([0-9]+))?(/.*)?$") | {
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user: .captures[0].string,
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host: .captures[1].string,
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port: .captures[2].string,
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path: .captures[3].string,
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};
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def sanitize: with_entries(select(.value != null));
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($default_target | parse) + ($target | parse | sanitize) |
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. + { local: (.user == env.LOGNAME and .host == env.HOSTNAME) }
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''}
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'');
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init.env = pkgs.writeText "init.env" /* sh */ ''
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export quiet
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export system
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export target
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export user
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default_target=root@$system:22/var/src
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export target_object="$(parse-target "$target" -d "$default_target")"
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export target_user="$(echo $target_object | ${pkgs.jq}/bin/jq -r .user)"
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export target_host="$(echo $target_object | ${pkgs.jq}/bin/jq -r .host)"
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export target_port="$(echo $target_object | ${pkgs.jq}/bin/jq -r .port)"
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export target_path="$(echo $target_object | ${pkgs.jq}/bin/jq -r .path)"
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export target_local="$(echo $target_object | ${pkgs.jq}/bin/jq -r .local)"
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'';
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init.proxy = command: opts: pkgs.writeText "init.proxy" /* sh */ ''
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if \test "''${using_proxy-}" != true; then
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source=$(get-source "$source_file")
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qualified_target=$target_user@$target_host:$target_port$target_path
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if \test "$force_populate" = true; then
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echo "$source" | populate --force "$qualified_target"
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else
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echo "$source" | populate "$qualified_target"
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fi
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if \test "$target_local" != true; then
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exec ${pkgs.openssh}/bin/ssh \
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"$target_user@$target_host" -p "$target_port" \
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cd "$target_path/stockholm" \; \
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NIX_PATH=$(quote "$target_path") \
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STOCKHOLM_VERSION=$(quote "$STOCKHOLM_VERSION") \
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nix-shell --run "$(quote "
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${lib.concatStringsSep " " (lib.mapAttrsToList
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(name: opt: /* sh */ "${opt.varname}=\$(quote ${opt.ref})")
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opts
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)} \
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using_proxy=true \
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${lib.shell.escape command} \
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$WITHGETOPT_ORIG_ARGS \
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")"
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fi
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fi
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'';
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utils.build = pkgs.writeDash "utils.build" ''
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set -efu
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${utils.with-whatsupnix} \
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${pkgs.nix}/bin/nix-build \
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--no-out-link \
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--show-trace \
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-E "with import <stockholm>; $1" \
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-I "$target_path" \
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'';
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utils.with-whatsupnix = pkgs.writeDash "utils.with-whatsupnix" ''
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set -efu
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if \test "$quiet" = true; then
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"$@" -Q 2>&1 | ${pkgs.whatsupnix}/bin/whatsupnix
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else
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exec "$@"
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fi
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'';
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shell.get-version = pkgs.writeDash "shell.get-version" ''
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set -efu
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version=git.$(${pkgs.git}/bin/git describe --always --dirty)
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case $version in (*-dirty)
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version=$version@$HOSTNAME
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esac
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date=$(${pkgs.coreutils}/bin/date +%y.%m)
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echo "$date.$version"
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'';
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shell.cmdspkg = pkgs.writeOut "shell.cmdspkg" (lib.mapAttrs' (name: link:
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lib.nameValuePair "/bin/${name}" { inherit link; }
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) cmds);
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in pkgs.stdenv.mkDerivation {
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name = "stockholm";
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shellHook = /* sh */ ''
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export OLD_PATH="$PATH"
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export NIX_PATH=stockholm=${toString ./.}:nixpkgs=${toString <nixpkgs>}
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if test -e /nix/var/nix/daemon-socket/socket; then
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export NIX_REMOTE=daemon
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fi
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export PATH=${lib.makeBinPath [
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pkgs.populate
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pkgs.quote
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shell.cmdspkg
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]}
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eval "$(declare -F | ${pkgs.gnused}/bin/sed s/declare/unset/)"
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shopt -u no_empty_cmd_completion
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unalias -a
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enable -n \
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. [ alias bg bind break builtin caller cd command compgen complete \
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compopt continue dirs disown eval exec false fc fg getopts hash \
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help history jobs kill let local logout mapfile popd printf pushd \
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pwd read readarray readonly shift source suspend test times trap \
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true typeset ulimit umask unalias wait
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exitHandler() {
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:
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}
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export HOSTNAME="$(${pkgs.nettools}/bin/hostname)"
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export STOCKHOLM_VERSION="''${STOCKHOLM_VERSION-$(${shell.get-version})}"
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PS1='\[\e[38;5;162m\]\w\[\e[0m\] '
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'';
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}
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