Rework planners to support custom args

src/actions/base/create_directory.rs

@@ -69,13 +69,13 @@ impl Actionable for CreateDirectory {
     fn describe_execute(&self) -> Vec<ActionDescription> {
         let Self {
             path,
-            user,
+            user: _,
-            group,
+            group: _,
-            mode,
+            mode: _,
             force_prune_on_revert: _,
-            action_state: _,
+            action_state,
         } = &self;
-        if self.action_state == ActionState::Completed {
+        if *action_state == ActionState::Completed {
             vec![]
         } else {
             vec![ActionDescription::new(

src/actions/base/create_file.rs

@@ -56,10 +56,10 @@ impl Actionable for CreateFile {
     fn describe_execute(&self) -> Vec<ActionDescription> {
         let Self {
             path,
-            user,
+            user: _,
-            group,
+            group: _,
-            mode,
+            mode: _,
-            buf,
+            buf: _,
             force: _,
             action_state: _,
         } = &self;

src/actions/base/create_or_append_file.rs

@@ -53,10 +53,10 @@ impl Actionable for CreateOrAppendFile {
     fn describe_execute(&self) -> Vec<ActionDescription> {
         let Self {
             path,
-            user,
+            user: _,
-            group,
+            group: _,
-            mode,
+            mode: _,
-            buf,
+            buf: _,
             action_state: _,
         } = &self;
         if self.action_state == ActionState::Completed {

src/actions/base/darwin/create_volume.rs

@@ -110,7 +110,7 @@ impl Actionable for CreateVolume {
     ))]
     async fn revert(&mut self) -> Result<(), Self::Error> {
         let Self {
-            disk,
+            disk: _,
             name,
             case_sensitive: _,
             action_state,

src/actions/base/darwin/encrypt_volume.rs

@@ -1,8 +1,5 @@
 use serde::Serialize;
 use std::path::{Path, PathBuf};
-use tokio::process::Command;
-
-use crate::execute_command;
 
 use crate::actions::{Action, ActionDescription, ActionState, Actionable};
 
@@ -47,8 +44,8 @@ impl Actionable for EncryptVolume {
     ))]
     async fn execute(&mut self) -> Result<(), Self::Error> {
         let Self {
-            disk,
+            disk: _,
-            password,
+            password: _,
             action_state,
         } = self;
         if *action_state == ActionState::Completed {
@@ -77,8 +74,8 @@ impl Actionable for EncryptVolume {
     ))]
     async fn revert(&mut self) -> Result<(), Self::Error> {
         let Self {
-            disk,
+            disk: _,
-            password,
+            password: _,
             action_state,
         } = self;
         if *action_state == ActionState::Uncompleted {

src/actions/base/darwin/unmount_volume.rs

@@ -49,7 +49,7 @@ impl Actionable for UnmountVolume {
     ))]
     async fn execute(&mut self) -> Result<(), Self::Error> {
         let Self {
-            disk,
+            disk: _,
             name,
             action_state,
         } = self;
@@ -91,7 +91,7 @@ impl Actionable for UnmountVolume {
     ))]
     async fn revert(&mut self) -> Result<(), Self::Error> {
         let Self {
-            disk,
+            disk: _,
             name,
             action_state,
         } = self;

src/actions/meta/configure_nix.rs

@@ -1,6 +1,9 @@
+use reqwest::Url;
 use serde::Serialize;
 
-use crate::actions::{
+use crate::InstallSettings;
+use crate::{
+    actions::{
         base::{
             ConfigureNixDaemonService, ConfigureNixDaemonServiceError, SetupDefaultProfile,
             SetupDefaultProfileError,
@@ -10,8 +13,9 @@ use crate::actions::{
             PlaceChannelConfigurationError, PlaceNixConfiguration, PlaceNixConfigurationError,
         },
         Action, ActionState,
+    },
+    cli::arg::ChannelValue,
 };
-use crate::InstallSettings;
 
 use crate::actions::{ActionDescription, Actionable};
 
@@ -28,13 +32,14 @@ pub struct ConfigureNix {
 impl ConfigureNix {
     #[tracing::instrument(skip_all)]
     pub async fn plan(settings: InstallSettings) -> Result<Self, ConfigureNixError> {
-        let channels = settings
+        let channels: Vec<(String, Url)> = settings
             .channels
             .iter()
-            .map(|(channel, _)| channel.to_string())
+            .map(|ChannelValue(channel, url)| (channel.to_string(), url.clone()))
             .collect();
 
-        let setup_default_profile = SetupDefaultProfile::plan(channels).await?;
+        let setup_default_profile =
+            SetupDefaultProfile::plan(channels.iter().map(|(v, _k)| v.clone()).collect()).await?;
 
         let configure_shell_profile = if settings.modify_profile {
             Some(ConfigureShellProfile::plan().await?)
@@ -42,7 +47,7 @@ impl ConfigureNix {
             None
         };
         let place_channel_configuration =
-            PlaceChannelConfiguration::plan(settings.channels, settings.force).await?;
+            PlaceChannelConfiguration::plan(channels, settings.force).await?;
         let place_nix_configuration = PlaceNixConfiguration::plan(
             settings.nix_build_group_name,
             settings.extra_conf,

src/actions/meta/darwin/create_apfs_volume.rs

@@ -5,19 +5,15 @@ use std::{
 };
 use tokio::process::Command;
 
-use crate::actions::{base::darwin, Action, ActionDescription, ActionState, Actionable};
+use crate::actions::base::{
-use crate::{
-    actions::base::{
     darwin::{
-            BootstrapVolume, BootstrapVolumeError, CreateSyntheticObjects,
+        BootstrapVolume, BootstrapVolumeError, CreateSyntheticObjects, CreateSyntheticObjectsError,
-            CreateSyntheticObjectsError, CreateVolume, CreateVolumeError, EnableOwnership,
+        CreateVolume, CreateVolumeError, EnableOwnership, EnableOwnershipError, EncryptVolume,
-            EnableOwnershipError, EncryptVolume, EncryptVolumeError, UnmountVolume,
+        EncryptVolumeError, UnmountVolume, UnmountVolumeError,
-            UnmountVolumeError,
     },
     CreateFile, CreateFileError, CreateOrAppendFile, CreateOrAppendFileError,
-    },
-    execute_command,
 };
+use crate::actions::{Action, ActionDescription, ActionState, Actionable};
 
 const NIX_VOLUME_MOUNTD_DEST: &str = "/Library/LaunchDaemons/org.nixos.darwin-store.plist";
 

src/actions/meta/provision_nix.rs

@@ -4,8 +4,7 @@ use serde::Serialize;
 use tokio::task::JoinError;
 
 use crate::actions::base::{
-    CreateDirectory, CreateDirectoryError, FetchNix, FetchNixError, MoveUnpackedNix,
+    CreateDirectoryError, FetchNix, FetchNixError, MoveUnpackedNix, MoveUnpackedNixError,
-    MoveUnpackedNixError,
 };
 use crate::InstallSettings;
 

src/cli/arg/channel_value.rs

@@ -1,6 +1,7 @@
 use reqwest::Url;
+use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ChannelValue(pub String, pub Url);
 
 impl clap::builder::ValueParserFactory for ChannelValue {
@@ -10,6 +11,12 @@ impl clap::builder::ValueParserFactory for ChannelValue {
     }
 }
 
+impl From<(String, Url)> for ChannelValue {
+    fn from((string, url): (String, Url)) -> Self {
+        Self(string, url)
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct ChannelValueParser;
 impl clap::builder::TypedValueParser for ChannelValueParser {

src/cli/arg/instrumentation.rs

@@ -9,11 +9,11 @@ use valuable::Valuable;
 pub struct Instrumentation {
     /// Enable debug logs, -vv for trace
     #[clap(short = 'v', long, action = clap::ArgAction::Count, global = true)]
-    pub(crate) verbose: u8,
+    pub verbose: u8,
 }
 
 impl<'a> Instrumentation {
-    pub(crate) fn log_level(&self) -> String {
+    pub fn log_level(&self) -> String {
         match self.verbose {
             0 => "info",
             1 => "debug",
@@ -22,7 +22,7 @@ impl<'a> Instrumentation {
         .to_string()
     }
 
-    pub(crate) fn setup<'b: 'a>(&'b self) -> eyre::Result<()> {
+    pub fn setup<'b: 'a>(&'b self) -> eyre::Result<()> {
         let fmt_layer = self.fmt_layer();
         let filter_layer = self.filter_layer()?;
 
@@ -35,7 +35,7 @@ impl<'a> Instrumentation {
         Ok(())
     }
 
-    pub(crate) fn fmt_layer<S>(&self) -> impl tracing_subscriber::layer::Layer<S>
+    pub fn fmt_layer<S>(&self) -> impl tracing_subscriber::layer::Layer<S>
     where
         S: tracing::Subscriber + for<'span> tracing_subscriber::registry::LookupSpan<'span>,
     {
@@ -45,7 +45,7 @@ impl<'a> Instrumentation {
             .pretty()
     }
 
-    pub(crate) fn filter_layer(&self) -> eyre::Result<EnvFilter> {
+    pub fn filter_layer(&self) -> eyre::Result<EnvFilter> {
         let filter_layer = match EnvFilter::try_from_default_env() {
             Ok(layer) => layer,
             Err(e) => {

src/cli/arg/mod.rs

@@ -2,5 +2,3 @@ mod instrumentation;
 pub(crate) use instrumentation::Instrumentation;
 mod channel_value;
 pub(crate) use channel_value::ChannelValue;
-mod plan_options;
-pub(crate) use plan_options::PlanOptions;

src/cli/arg/plan_options.rs

@@ -1,45 +0,0 @@
-use clap::{ArgAction, Parser};
-use harmonic::Planner;
-
-/// Plan an install that can be repeated on an identical host later
-#[derive(Debug, Parser)]
-pub(crate) struct PlanOptions {
-    /// Channel(s) to add by default, pass multiple times for multiple channels
-    #[clap(
-        long,
-        value_parser,
-        action = clap::ArgAction::Append,
-        env = "HARMONIC_CHANNEL",
-        default_value = "nixpkgs=https://nixos.org/channels/nixpkgs-unstable",
-        group = "plan_options"
-    )]
-    pub(crate) channel: Vec<crate::cli::arg::ChannelValue>,
-    /// Don't modify the user profile to automatically load nix
-    #[clap(
-        long,
-        action(ArgAction::SetTrue),
-        default_value = "false",
-        global = true,
-        group = "plan_options"
-    )]
-    pub(crate) no_modify_profile: bool,
-    /// Number of build users to create
-    #[clap(
-        long,
-        default_value = "32",
-        env = "HARMONIC_NIX_DAEMON_USER_COUNT",
-        group = "plan_options"
-    )]
-    pub(crate) daemon_user_count: usize,
-    #[clap(
-        long,
-        action(ArgAction::SetTrue),
-        default_value = "false",
-        global = true,
-        group = "plan_options"
-    )]
-    pub(crate) force: bool,
-    // Override the default planner for this OS/Architecture
-    #[clap(long, global = true, group = "plan_options", value_parser = clap::builder::EnumValueParser::<Planner>::new())]
-    pub(crate) planner: Option<Planner>,
-}

src/cli/mod.rs

@@ -7,7 +7,7 @@ use std::process::ExitCode;
 use self::subcommand::HarmonicSubcommand;
 
 #[async_trait::async_trait]
-pub(crate) trait CommandExecute {
+pub trait CommandExecute {
     async fn execute(self) -> eyre::Result<ExitCode>;
 }
 
@@ -16,12 +16,12 @@ pub(crate) trait CommandExecute {
 /// Plans a Nix install, prompts for confirmation, then executes it
 #[derive(Debug, Parser)]
 #[clap(version)]
-pub(crate) struct HarmonicCli {
+pub struct HarmonicCli {
     #[clap(flatten)]
-    pub(crate) instrumentation: arg::Instrumentation,
+    pub instrumentation: arg::Instrumentation,
 
     #[clap(subcommand)]
-    subcommand: HarmonicSubcommand,
+    pub subcommand: HarmonicSubcommand,
 }
 
 #[async_trait::async_trait]

src/cli/subcommand/install.rs

@@ -1,41 +1,35 @@
 use std::{path::PathBuf, process::ExitCode};
 
+use crate::BuiltinPlanner;
 use clap::{ArgAction, Parser};
 use eyre::{eyre, WrapErr};
-use harmonic::{InstallPlan, InstallSettings, Planner};
 
-use crate::{
+use crate::{cli::CommandExecute, interaction};
-    cli::{
-        arg::{ChannelValue, PlanOptions},
-        CommandExecute,
-    },
-    interaction,
-};
 
 /// Execute an install (possibly using an existing plan)
 #[derive(Debug, Parser)]
-pub(crate) struct Install {
+#[command(args_conflicts_with_subcommands = true)]
+pub struct Install {
     #[clap(
         long,
         action(ArgAction::SetTrue),
         default_value = "false",
         global = true
     )]
-    no_confirm: bool,
+    pub no_confirm: bool,
-    #[clap(flatten)]
+
-    plan_options: PlanOptions,
     #[clap(
         long,
         action(ArgAction::SetTrue),
         default_value = "false",
         global = true
     )]
-    pub(crate) explain: bool,
+    pub explain: bool,
-    #[clap(
+    #[clap(env = "HARMONIC_PLAN")]
-        conflicts_with_all = [ "plan_options" ],
+    pub plan: Option<PathBuf>,
-        env = "HARMONIC_PLAN",
+
-    )]
+    #[clap(subcommand)]
-    plan: Option<PathBuf>,
+    pub planner: BuiltinPlanner,
 }
 
 #[async_trait::async_trait]
@@ -45,7 +39,7 @@ impl CommandExecute for Install {
         let Self {
             no_confirm,
             plan,
-            plan_options,
+            planner,
             explain,
         } = self;
 
@@ -56,26 +50,7 @@ impl CommandExecute for Install {
                     .wrap_err("Reading plan")?;
                 serde_json::from_str(&install_plan_string)?
             },
-            None => {
+            None => planner.plan().await?,
-                let mut settings = InstallSettings::default()?;
-
-                settings.force(plan_options.force);
-                settings.daemon_user_count(plan_options.daemon_user_count);
-                settings.channels(
-                    plan_options
-                        .channel
-                        .into_iter()
-                        .map(|ChannelValue(name, url)| (name, url)),
-                );
-                settings.modify_profile(!plan_options.no_modify_profile);
-
-                let planner = match plan_options.planner {
-                    Some(planner) => planner,
-                    None => Planner::default()?,
-                };
-
-                InstallPlan::new(planner, settings).await?
-            },
         };
 
         if !no_confirm {

src/cli/subcommand/mod.rs

@@ -6,7 +6,7 @@ mod uninstall;
 use uninstall::Uninstall;
 
 #[derive(Debug, clap::Subcommand)]
-pub(crate) enum HarmonicSubcommand {
+pub enum HarmonicSubcommand {
     Plan(Plan),
     Install(Install),
     Uninstall(Uninstall),

src/cli/subcommand/plan.rs

@@ -1,61 +1,34 @@
 use std::{path::PathBuf, process::ExitCode};
 
+use crate::BuiltinPlanner;
 use clap::Parser;
-use harmonic::{InstallPlan, InstallSettings, Planner};
 
 use eyre::WrapErr;
 
-use crate::cli::{
+use crate::cli::CommandExecute;
-    arg::{ChannelValue, PlanOptions},
-    CommandExecute,
-};
 
 /// Plan an install that can be repeated on an identical host later
 #[derive(Debug, Parser)]
-pub(crate) struct Plan {
+#[command(multicall = true)]
-    #[clap(flatten)]
+pub struct Plan {
-    plan_options: PlanOptions,
+    #[clap(subcommand)]
-    #[clap(default_value = "/dev/stdout")]
+    pub planner: Option<BuiltinPlanner>,
-    pub(crate) plan: PathBuf,
+    #[clap(env = "HARMONIC_PLAN")]
+    pub plan: PathBuf,
 }
 
 #[async_trait::async_trait]
 impl CommandExecute for Plan {
-    #[tracing::instrument(skip_all, fields(
+    #[tracing::instrument(skip_all, fields())]
-        channels = %self.plan_options.channel.iter().map(|ChannelValue(name, url)| format!("{name} {url}")).collect::<Vec<_>>().join(", "),
-        daemon_user_count = %self.plan_options.daemon_user_count,
-        no_modify_profile = %self.plan_options.no_modify_profile,
-    ))]
     async fn execute(self) -> eyre::Result<ExitCode> {
-        let Self {
+        let Self { planner, plan } = self;
-            plan_options:
-                PlanOptions {
-                    channel,
-                    no_modify_profile,
-                    daemon_user_count,
-                    force,
-                    planner,
-                },
-            plan,
-        } = self;
-
-        let mut settings = InstallSettings::default()?;
-
-        settings.force(force);
-        settings.daemon_user_count(daemon_user_count);
-        settings.channels(
-            channel
-                .into_iter()
-                .map(|ChannelValue(name, url)| (name, url)),
-        );
-        settings.modify_profile(!no_modify_profile);
 
         let planner = match planner {
             Some(planner) => planner,
-            None => Planner::default()?,
+            None => BuiltinPlanner::default()?,
         };
 
-        let install_plan = InstallPlan::new(planner, settings).await?;
+        let install_plan = planner.plan().await?;
 
         let json = serde_json::to_string_pretty(&install_plan)?;
         tokio::fs::write(plan, json)

src/cli/subcommand/uninstall.rs

@@ -1,30 +1,30 @@
 use std::{path::PathBuf, process::ExitCode};
 
+use crate::InstallPlan;
 use clap::{ArgAction, Parser};
 use eyre::WrapErr;
-use harmonic::InstallPlan;
 
 use crate::{cli::CommandExecute, interaction};
 
 /// Uninstall a previously installed Nix (only Harmonic done installs supported)
 #[derive(Debug, Parser)]
-pub(crate) struct Uninstall {
+pub struct Uninstall {
     #[clap(
         long,
         action(ArgAction::SetTrue),
         default_value = "false",
         global = true
     )]
-    no_confirm: bool,
+    pub no_confirm: bool,
     #[clap(
         long,
         action(ArgAction::SetTrue),
         default_value = "false",
         global = true
     )]
-    explain: bool,
+    pub explain: bool,
     #[clap(default_value = "/nix/receipt.json")]
-    receipt: PathBuf,
+    pub receipt: PathBuf,
 }
 
 #[async_trait::async_trait]

src/lib.rs

@@ -1,19 +1,17 @@
 mod actions;
+pub mod cli;
 mod error;
+mod interaction;
 mod os;
 mod plan;
 mod planner;
 mod settings;
 
-use std::{
+use std::{ffi::OsStr, fmt::Display, process::Output};
-    ffi::OsStr,
-    fmt::Display,
-    process::{ExitStatus, Output},
-};
 
 pub use error::HarmonicError;
 pub use plan::InstallPlan;
-pub use planner::Planner;
+pub use planner::BuiltinPlanner;
 use serde::Serializer;
 pub use settings::InstallSettings;
 

src/main.rs

@@ -1,11 +1,7 @@
-pub(crate) mod cli;
-
 use std::process::ExitCode;
 
-pub mod interaction;
-
 use clap::Parser;
-use cli::CommandExecute;
+use harmonic::cli::CommandExecute;
 
 #[tokio::main]
 async fn main() -> color_eyre::Result<ExitCode> {
@@ -17,7 +13,7 @@ async fn main() -> color_eyre::Result<ExitCode> {
         })
         .install()?;
 
-    let cli = cli::HarmonicCli::parse();
+    let cli = harmonic::cli::HarmonicCli::parse();
 
     cli.instrumentation.setup()?;
 

src/plan.rs

@@ -2,32 +2,20 @@ use std::path::PathBuf;
 
 use crate::{
     actions::{Action, ActionDescription, ActionError, Actionable},
-    planner::PlannerError,
+    BuiltinPlanner, HarmonicError,
-    settings::InstallSettings,
-    HarmonicError, Planner,
 };
 
 #[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
 pub struct InstallPlan {
-    pub(crate) settings: InstallSettings,
-
     pub(crate) actions: Vec<Action>,
 
-    pub(crate) planner: Planner,
+    pub(crate) planner: BuiltinPlanner,
 }
 
 impl InstallPlan {
-    pub async fn new(planner: Planner, settings: InstallSettings) -> Result<Self, PlannerError> {
-        planner.plan(settings).await
-    }
-
     #[tracing::instrument(skip_all)]
     pub fn describe_execute(&self, explain: bool) -> String {
-        let Self {
+        let Self { planner, actions } = self;
-            planner,
-            settings,
-            actions,
-        } = self;
         format!(
             "\
             This Nix install is for:\n\
@@ -42,12 +30,7 @@ impl InstallPlan {
         ",
             os_type = "Linux",
             init_type = "systemd",
-            nix_channels = settings
+            nix_channels = "todo",
-                .channels
-                .iter()
-                .map(|(name, url)| format!("{name}={url}"))
-                .collect::<Vec<_>>()
-                .join(","),
             actions = actions
                 .iter()
                 .map(|v| v.describe_execute())
@@ -76,7 +59,6 @@ impl InstallPlan {
     pub async fn install(&mut self) -> Result<(), HarmonicError> {
         let Self {
             actions,
-            settings: _,
             planner: _,
         } = self;
 
@@ -97,11 +79,7 @@ impl InstallPlan {
 
     #[tracing::instrument(skip_all)]
     pub fn describe_revert(&self, explain: bool) -> String {
-        let Self {
+        let Self { planner, actions } = self;
-            planner,
-            settings,
-            actions,
-        } = self;
         format!(
             "\
             This Nix uninstall is for:\n\
@@ -116,12 +94,7 @@ impl InstallPlan {
         ",
             os_type = "Linux",
             init_type = "systemd",
-            nix_channels = settings
+            nix_channels = "todo",
-                .channels
-                .iter()
-                .map(|(name, url)| format!("{name}={url}"))
-                .collect::<Vec<_>>()
-                .join(","),
             actions = actions
                 .iter()
                 .map(|v| v.describe_revert())
@@ -150,7 +123,6 @@ impl InstallPlan {
     pub async fn revert(&mut self) -> Result<(), HarmonicError> {
         let Self {
             actions,
-            settings: _,
             planner: _,
         } = self;
 

src/planner/darwin/mod.rs

@@ -1,3 +1,3 @@
-mod multi_user;
+mod multi;
 
-pub use multi_user::DarwinMultiUser;
+pub use multi::DarwinMulti;

src/planner/darwin/multi.rs

@@ -11,20 +11,27 @@ use crate::{
     execute_command,
     os::darwin::DiskUtilOutput,
     planner::{Plannable, PlannerError},
-    InstallPlan, Planner,
+    BuiltinPlanner, InstallPlan, InstallSettings,
 };
 
-#[derive(Debug, Clone, serde::Serialize, serde::Deserialize, Default)]
+#[derive(Debug, Clone, clap::Parser, serde::Serialize, serde::Deserialize)]
-pub struct DarwinMultiUser;
+pub struct DarwinMulti {
+    #[clap(flatten)]
+    settings: InstallSettings,
+}
 
 #[async_trait::async_trait]
-impl Plannable for DarwinMultiUser {
+impl Plannable for DarwinMulti {
     const DISPLAY_STRING: &'static str = "Darwin Multi-User";
     const SLUG: &'static str = "darwin-multi";
 
-    async fn plan(
+    fn default() -> Result<Self, PlannerError> {
-        settings: crate::InstallSettings,
+        Ok(Self {
-    ) -> Result<crate::InstallPlan, crate::planner::PlannerError> {
+            settings: InstallSettings::default()?,
+        })
+    }
+
+    async fn plan(self) -> Result<crate::InstallPlan, crate::planner::PlannerError> {
         let root_disk = {
             let buf =
                 execute_command(Command::new("/usr/sbin/diskutil").args(["info", "-plist", "/"]))
@@ -39,8 +46,7 @@ impl Plannable for DarwinMultiUser {
         let volume_label = "Nix Store".into();
 
         Ok(InstallPlan {
-            planner: Self.into(),
+            planner: self.clone().into(),
-            settings: settings.clone(),
             actions: vec![
                 // Create Volume step:
                 //
@@ -50,11 +56,11 @@ impl Plannable for DarwinMultiUser {
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
-                ProvisionNix::plan(settings.clone())
+                ProvisionNix::plan(self.settings.clone())
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
-                ConfigureNix::plan(settings)
+                ConfigureNix::plan(self.settings)
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
@@ -67,8 +73,8 @@ impl Plannable for DarwinMultiUser {
     }
 }
 
-impl Into<Planner> for DarwinMultiUser {
+impl Into<BuiltinPlanner> for DarwinMulti {
-    fn into(self) -> Planner {
+    fn into(self) -> BuiltinPlanner {
-        Planner::DarwinMultiUser
+        BuiltinPlanner::DarwinMulti(self)
     }
 }

src/planner/linux/mod.rs

@@ -1,3 +1,3 @@
-mod multi_user;
+mod multi;
 
-pub use multi_user::LinuxMultiUser;
+pub use multi::LinuxMulti;

src/planner/linux/multi.rs

@@ -5,31 +5,39 @@ use crate::{
         Action, ActionError,
     },
     planner::{Plannable, PlannerError},
-    InstallPlan, InstallSettings, Planner,
+    BuiltinPlanner, InstallPlan, InstallSettings,
 };
 
-#[derive(Debug, Clone, serde::Serialize, serde::Deserialize, Default)]
+#[derive(Debug, Clone, clap::Parser, serde::Serialize, serde::Deserialize)]
-pub struct LinuxMultiUser;
+pub struct LinuxMulti {
+    #[clap(flatten)]
+    settings: InstallSettings,
+}
 
 #[async_trait::async_trait]
-impl Plannable for LinuxMultiUser {
+impl Plannable for LinuxMulti {
     const DISPLAY_STRING: &'static str = "Linux Multi-User";
     const SLUG: &'static str = "linux-multi";
 
-    async fn plan(settings: InstallSettings) -> Result<InstallPlan, PlannerError> {
+    fn default() -> Result<Self, PlannerError> {
+        Ok(Self {
+            settings: InstallSettings::default()?,
+        })
+    }
+
+    async fn plan(self) -> Result<InstallPlan, PlannerError> {
         Ok(InstallPlan {
-            planner: Self.into(),
+            planner: self.clone().into(),
-            settings: settings.clone(),
             actions: vec![
                 CreateDirectory::plan("/nix", None, None, 0o0755, true)
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
-                ProvisionNix::plan(settings.clone())
+                ProvisionNix::plan(self.settings.clone())
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
-                ConfigureNix::plan(settings)
+                ConfigureNix::plan(self.settings)
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
@@ -42,8 +50,8 @@ impl Plannable for LinuxMultiUser {
     }
 }
 
-impl Into<Planner> for LinuxMultiUser {
+impl Into<BuiltinPlanner> for LinuxMulti {
-    fn into(self) -> Planner {
+    fn into(self) -> BuiltinPlanner {
-        Planner::LinuxMultiUser
+        BuiltinPlanner::LinuxMulti(self)
     }
 }

src/planner/mod.rs

@@ -1,51 +1,57 @@
-mod darwin;
+pub mod darwin;
-mod linux;
+pub mod linux;
-mod specific;
+pub mod specific;
 
-use crate::{actions::ActionError, InstallPlan, InstallSettings};
+use crate::{actions::ActionError, settings::InstallSettingsError, InstallPlan};
 
-#[derive(Debug, Clone, clap::ValueEnum, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, clap::Subcommand, serde::Serialize, serde::Deserialize)]
-pub enum Planner {
+pub enum BuiltinPlanner {
-    LinuxMultiUser,
+    LinuxMulti(linux::LinuxMulti),
-    DarwinMultiUser,
+    DarwinMulti(darwin::DarwinMulti),
-    SteamDeck,
+    SteamDeck(specific::SteamDeck),
 }
 
-impl Planner {
+impl BuiltinPlanner {
-    pub fn possible_values() -> &'static [Planner] {
-        &[Self::LinuxMultiUser, Self::DarwinMultiUser, Self::SteamDeck]
-    }
     pub fn default() -> Result<Self, PlannerError> {
         use target_lexicon::{Architecture, OperatingSystem};
         match (Architecture::host(), OperatingSystem::host()) {
-            (Architecture::X86_64, OperatingSystem::Linux) => Ok(Self::LinuxMultiUser),
+            (Architecture::X86_64, OperatingSystem::Linux) => {
-            (Architecture::Aarch64(_), OperatingSystem::Linux) => Ok(Self::LinuxMultiUser),
+                Ok(Self::LinuxMulti(linux::LinuxMulti::default()?))
+            },
+            (Architecture::Aarch64(_), OperatingSystem::Linux) => {
+                Ok(Self::LinuxMulti(linux::LinuxMulti::default()?))
+            },
             (Architecture::X86_64, OperatingSystem::MacOSX { .. })
-            | (Architecture::X86_64, OperatingSystem::Darwin) => Ok(Self::DarwinMultiUser),
+            | (Architecture::X86_64, OperatingSystem::Darwin) => {
+                Ok(Self::DarwinMulti(darwin::DarwinMulti::default()?))
+            },
             (Architecture::Aarch64(_), OperatingSystem::MacOSX { .. })
-            | (Architecture::Aarch64(_), OperatingSystem::Darwin) => Ok(Self::DarwinMultiUser),
+            | (Architecture::Aarch64(_), OperatingSystem::Darwin) => {
+                Ok(Self::DarwinMulti(darwin::DarwinMulti::default()?))
+            },
             _ => Err(PlannerError::UnsupportedArchitecture(target_lexicon::HOST)),
         }
     }
 
-    pub async fn plan(self, settings: InstallSettings) -> Result<InstallPlan, PlannerError> {
+    pub async fn plan(self) -> Result<InstallPlan, PlannerError> {
         match self {
-            Planner::LinuxMultiUser => linux::LinuxMultiUser::plan(settings).await,
+            BuiltinPlanner::LinuxMulti(planner) => planner.plan().await,
-            Planner::DarwinMultiUser => darwin::DarwinMultiUser::plan(settings).await,
+            BuiltinPlanner::DarwinMulti(planner) => planner.plan().await,
-            Planner::SteamDeck => specific::SteamDeck::plan(settings).await,
+            BuiltinPlanner::SteamDeck(planner) => planner.plan().await,
         }
     }
 }
 
 #[async_trait::async_trait]
-trait Plannable: Into<Planner>
+trait Plannable: Into<BuiltinPlanner>
 where
     Self: Sized,
 {
     const DISPLAY_STRING: &'static str;
     const SLUG: &'static str;
 
-    async fn plan(settings: InstallSettings) -> Result<InstallPlan, PlannerError>;
+    fn default() -> Result<Self, PlannerError>;
+    async fn plan(self) -> Result<InstallPlan, PlannerError>;
 }
 
 #[derive(thiserror::Error, Debug)]
@@ -58,4 +64,6 @@ pub enum PlannerError {
         #[from]
         ActionError,
     ),
+    #[error(transparent)]
+    InstallSettings(#[from] InstallSettingsError),
 }

src/planner/specific/steam_deck.rs

@@ -4,24 +4,30 @@ use crate::{
         meta::{CreateSystemdSysext, ProvisionNix},
         Action, ActionError,
     },
-    planner::Plannable,
+    planner::{Plannable, PlannerError},
-    InstallPlan, Planner,
+    BuiltinPlanner, InstallPlan, InstallSettings,
 };
 
-#[derive(Debug, Clone, serde::Serialize, serde::Deserialize, Default)]
+#[derive(Debug, Clone, clap::Parser, serde::Serialize, serde::Deserialize)]
-pub struct SteamDeck;
+pub struct SteamDeck {
+    #[clap(flatten)]
+    settings: InstallSettings,
+}
 
 #[async_trait::async_trait]
 impl Plannable for SteamDeck {
     const DISPLAY_STRING: &'static str = "Steam Deck (x86_64 Linux Multi-User)";
     const SLUG: &'static str = "steam-deck";
 
-    async fn plan(
+    fn default() -> Result<Self, PlannerError> {
-        settings: crate::InstallSettings,
+        Ok(Self {
-    ) -> Result<crate::InstallPlan, crate::planner::PlannerError> {
+            settings: InstallSettings::default()?,
+        })
+    }
+
+    async fn plan(self) -> Result<crate::InstallPlan, PlannerError> {
         Ok(InstallPlan {
-            planner: Self.into(),
+            planner: self.clone().into(),
-            settings: settings.clone(),
             actions: vec![
                 CreateSystemdSysext::plan("/var/lib/extensions")
                     .await
@@ -31,7 +37,7 @@ impl Plannable for SteamDeck {
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
-                ProvisionNix::plan(settings.clone())
+                ProvisionNix::plan(self.settings.clone())
                     .await
                     .map(Action::from)
                     .map_err(ActionError::from)?,
@@ -44,8 +50,8 @@ impl Plannable for SteamDeck {
     }
 }
 
-impl Into<Planner> for SteamDeck {
+impl Into<BuiltinPlanner> for SteamDeck {
-    fn into(self) -> Planner {
+    fn into(self) -> BuiltinPlanner {
-        Planner::SteamDeck
+        BuiltinPlanner::SteamDeck(self)
     }
 }

src/settings.rs

@@ -1,22 +1,90 @@
-use crate::planner;
+use clap::ArgAction;
-use target_lexicon::Triple;
+use derivative::Derivative;
 use url::Url;
 
+pub const NIX_X64_64_LINUX_URL: &str =
+    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz";
+pub const NIX_AARCH64_LINUX_URL: &str =
+    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-linux.tar.xz";
+pub const NIX_X64_64_DARWIN_URL: &str =
+    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-darwin.tar.xz";
+pub const NIX_AARCH64_DARWIN_URL: &str =
+    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-darwin.tar.xz";
+
 #[serde_with::serde_as]
-#[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
+#[derive(Debug, serde::Deserialize, serde::Serialize, Clone, clap::Parser)]
 pub struct InstallSettings {
-    pub(crate) daemon_user_count: usize,
+    /// Channel(s) to add by default, pass multiple times for multiple channels
-    pub(crate) channels: Vec<(String, Url)>,
+    #[clap(
+        long,
+        value_parser,
+        name = "channel",
+        action = clap::ArgAction::Append,
+        env = "HARMONIC_CHANNEL",
+        default_value = "nixpkgs=https://nixos.org/channels/nixpkgs-unstable",
+    )]
+    pub(crate) channels: Vec<crate::cli::arg::ChannelValue>,
+    /// Modify the user profile to automatically load nix
+    #[clap(
+        long,
+        action(ArgAction::SetFalse),
+        default_value = "true",
+        global = true,
+        env = "HARMONIC_NO_MODIFY_PROFILE",
+        name = "no-modify-profile"
+    )]
     pub(crate) modify_profile: bool,
+    /// Number of build users to create
+    #[clap(long, default_value = "32", env = "HARMONIC_DAEMON_USER_COUNT")]
+    pub(crate) daemon_user_count: usize,
+    #[clap(long, default_value = "nixbld", env = "HARMONIC_NIX_BUILD_GROUP_NAME")]
     pub(crate) nix_build_group_name: String,
+    #[clap(long, default_value_t = 3000, env = "HARMONIC_NIX_BUILD_GROUP_ID")]
     pub(crate) nix_build_group_id: usize,
+    #[clap(long, env = "HARMONIC_NIX_BUILD_USER_PREFIX")]
+    #[cfg_attr(target_os = "macos", clap(default_value = "_nixbld"))]
+    #[cfg_attr(target_os = "linux", clap(default_value = "nixbld"))]
     pub(crate) nix_build_user_prefix: String,
+    #[clap(long, env = "HARMONIC_NIX_BUILD_USER_ID_BASE")]
+    #[cfg_attr(target_os = "macos", clap(default_value_t = 300))]
+    #[cfg_attr(target_os = "linux", clap(default_value_t = 3000))]
     pub(crate) nix_build_user_id_base: usize,
+    #[clap(long, env = "HARMONIC_NIX_PACKAGE_URL")]
+    #[cfg_attr(
+        all(target_os = "macos", target_arch = "x86_64"),
+        clap(
+            default_value = NIX_X64_64_DARWIN_URL,
+        )
+    )]
+    #[cfg_attr(
+        all(target_os = "macos", target_arch = "aarch64"),
+        clap(
+            default_value = NIX_AARCH64_DARWIN_URL,
+        )
+    )]
+    #[cfg_attr(
+        all(target_os = "linux", target_arch = "x86_64"),
+        clap(
+            default_value = NIX_X64_64_LINUX_URL,
+        )
+    )]
+    #[cfg_attr(
+        all(target_os = "linux", target_arch = "aarch64"),
+        clap(
+            default_value = NIX_AARCH64_LINUX_URL,
+        )
+    )]
     pub(crate) nix_package_url: Url,
+    #[clap(long, env = "HARMONIC_EXTRA_CONF")]
     pub(crate) extra_conf: Option<String>,
+    #[clap(
+        long,
+        action(ArgAction::SetTrue),
+        default_value = "false",
+        global = true,
+        env = "HARMONIC_FORCE"
+    )]
     pub(crate) force: bool,
-    #[serde_as(as = "serde_with::DisplayFromStr")]
-    pub(crate) triple: Triple,
 }
 
 impl InstallSettings {
@@ -28,24 +96,24 @@ impl InstallSettings {
         use target_lexicon::{Architecture, OperatingSystem};
         match (Architecture::host(), OperatingSystem::host()) {
             (Architecture::X86_64, OperatingSystem::Linux) => {
-                url = "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz";
+                url = NIX_X64_64_LINUX_URL;
                 nix_build_user_prefix = "nixbld";
                 nix_build_user_id_base = 3000;
             },
             (Architecture::Aarch64(_), OperatingSystem::Linux) => {
-                url = "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-linux.tar.xz";
+                url = NIX_AARCH64_LINUX_URL;
                 nix_build_user_prefix = "nixbld";
                 nix_build_user_id_base = 3000;
             },
             (Architecture::X86_64, OperatingSystem::MacOSX { .. })
             | (Architecture::X86_64, OperatingSystem::Darwin) => {
-                url = "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-darwin.tar.xz";
+                url = NIX_X64_64_DARWIN_URL;
                 nix_build_user_prefix = "_nixbld";
                 nix_build_user_id_base = 300;
             },
             (Architecture::Aarch64(_), OperatingSystem::MacOSX { .. })
             | (Architecture::Aarch64(_), OperatingSystem::Darwin) => {
-                url = "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-darwin.tar.xz";
+                url = NIX_AARCH64_DARWIN_URL;
                 nix_build_user_prefix = "_nixbld";
                 nix_build_user_id_base = 300;
             },
@@ -57,17 +125,14 @@ impl InstallSettings {
         };
 
         Ok(Self {
-            triple: target_lexicon::HOST,
             daemon_user_count: Default::default(),
-            channels: Default::default(),
+            channels: Vec::default(),
-            modify_profile: Default::default(),
+            modify_profile: true,
             nix_build_group_name: String::from("nixbld"),
             nix_build_group_id: 3000,
             nix_build_user_prefix: nix_build_user_prefix.to_string(),
             nix_build_user_id_base,
-            nix_package_url: url
+            nix_package_url: url.parse()?,
-                .parse()
-                .expect("Could not parse default Nix archive url, please report this issue"),
             extra_conf: Default::default(),
             force: false,
         })
@@ -82,7 +147,7 @@ impl InstallSettings {
     }
 
     pub fn channels(&mut self, channels: impl IntoIterator<Item = (String, Url)>) -> &mut Self {
-        self.channels = channels.into_iter().collect();
+        self.channels = channels.into_iter().map(Into::into).collect();
         self
     }
 
@@ -128,10 +193,10 @@ impl InstallSettings {
 pub enum InstallSettingsError {
     #[error("Harmonic does not support the `{0}` architecture right now")]
     UnsupportedArchitecture(target_lexicon::Triple),
-    #[error("Planner error")]
+    #[error("Parsing URL")]
-    Planner(
+    Parse(
         #[source]
         #[from]
-        planner::PlannerError,
+        url::ParseError,
     ),
 }