Add --recompute flag for commands: shell and run (#2391)

## Summary

This PR continues the work from #2013 to also add the `--recompute` flag
option for `devbox run` and `devbox shell`.
For some users on bad networks, this can save them annoyance and time
for when they _know_ their devbox environment is up-to-date.

Fixes #2315

## How was it tested?
This PR affects 3 commands: `run`, `shell` and `shellenv`.

1. For `run`:
Added `"hello": "latest",` to devbox.json of this project.

```
devbox run --recompute=false -- echo "hello world"
Warning: Your devbox environment may be out of date. Run with --recompute=true to update it.
hello world
```

then
```
devbox run -- echo "hello world"
Info: Ensuring packages are installed.
✓ Computed the Devbox environment.
hello world
```

2. For `shell`. Ran similar commands as above.

3. For `shellenv`. Followed test plan of #1963.

Changed the `.envrc` to be:
```
.envrc
@@ -1,7 +1,13 @@
 # Automatically sets up your devbox environment whenever you cd into this
 # directory via our direnv integration:

-eval "$(devbox generate direnv --print-envrc)"
+#eval "$(devbox generate direnv --print-envrc)"

+ # output of `devbox generate direnv --print-envrc` to modify it
+use_devbox() {
+    watch_file devbox.json devbox.lock
+    # eval "$(devbox shellenv --init-hook --install --no-refresh-alias)"
+    eval "$(devbox shellenv --init-hook --no-refresh-alias --recompute=false)"
+}
+use devbox
 # check out https://www.jetify.com/devbox/docs/ide_configuration/direnv/
 # for more details
```

Then modified devbox.json and saw the warning get printed.

---------

Co-authored-by: savil <>

internal/boxcli/run.go

@@ -17,14 +17,16 @@ import (
 	"go.jetpack.io/devbox/internal/devbox"
 	"go.jetpack.io/devbox/internal/devbox/devopt"
 	"go.jetpack.io/devbox/internal/redact"
+	"go.jetpack.io/devbox/internal/ux"
 )
 
 type runCmdFlags struct {
 	envFlag
-	config      configFlags
-	omitNixEnv  bool
-	pure        bool
-	listScripts bool
+	config       configFlags
+	omitNixEnv   bool
+	pure         bool
+	listScripts  bool
+	recomputeEnv bool
 }
 
 // runFlagDefaults are the flag default values that differ
@@ -62,6 +64,7 @@ func runCmd(defaults runFlagDefaults) *cobra.Command {
 		"shell environment will omit the env-vars from print-dev-env",
 	)
 	_ = command.Flags().MarkHidden("omit-nix-env")
+	command.Flags().BoolVar(&flags.recomputeEnv, "recompute", true, "recompute environment if needed")
 
 	command.ValidArgs = listScripts(command, flags)
 
@@ -84,6 +87,7 @@ func listScripts(cmd *cobra.Command, flags runCmdFlags) []string {
 }
 
 func runScriptCmd(cmd *cobra.Command, args []string, flags runCmdFlags) error {
+	ctx := cmd.Context()
 	if len(args) == 0 || flags.listScripts {
 		scripts := listScripts(cmd, flags)
 		if len(scripts) == 0 {
@@ -111,19 +115,32 @@ func runScriptCmd(cmd *cobra.Command, args []string, flags runCmdFlags) error {
 	// Check the directory exists.
 	box, err := devbox.Open(&devopt.Opts{
 		Dir:         path,
+		Env:         env,
 		Environment: flags.config.environment,
 		Stderr:      cmd.ErrOrStderr(),
-		Env:         env,
 	})
 	if err != nil {
 		return redact.Errorf("error reading devbox.json: %w", err)
 	}
 
 	envOpts := devopt.EnvOptions{
-		OmitNixEnv: flags.omitNixEnv,
-		Pure:       flags.pure,
+		Hooks: devopt.LifecycleHooks{
+			OnStaleState: func() {
+				if !flags.recomputeEnv {
+					ux.FHidableWarning(
+						ctx,
+						cmd.ErrOrStderr(),
+						devbox.StateOutOfDateMessage,
+						"with --recompute=true",
+					)
+				}
+			},
+		},
+		OmitNixEnv:    flags.omitNixEnv,
+		Pure:          flags.pure,
+		SkipRecompute: !flags.recomputeEnv,
 	}
-	if err := box.RunScript(cmd.Context(), envOpts, script, scriptArgs); err != nil {
+	if err := box.RunScript(ctx, envOpts, script, scriptArgs); err != nil {
 		return redact.Errorf("error running script %q in Devbox: %w", script, err)
 	}
 	return nil

internal/boxcli/shell.go

@@ -13,14 +13,16 @@ import (
 	"go.jetpack.io/devbox/internal/devbox"
 	"go.jetpack.io/devbox/internal/devbox/devopt"
 	"go.jetpack.io/devbox/internal/envir"
+	"go.jetpack.io/devbox/internal/ux"
 )
 
 type shellCmdFlags struct {
 	envFlag
-	config     configFlags
-	omitNixEnv bool
-	printEnv   bool
-	pure       bool
+	config       configFlags
+	omitNixEnv   bool
+	printEnv     bool
+	pure         bool
+	recomputeEnv bool
 }
 
 // shellFlagDefaults are the flag default values that differ
@@ -53,17 +55,20 @@ func shellCmd(defaults shellFlagDefaults) *cobra.Command {
 		"shell environment will omit the env-vars from print-dev-env",
 	)
 	_ = command.Flags().MarkHidden("omit-nix-env")
+	command.Flags().BoolVar(&flags.recomputeEnv, "recompute", true, "recompute environment if needed")
 
 	flags.config.register(command)
 	flags.envFlag.register(command)
 	return command
 }
 
 func runShellCmd(cmd *cobra.Command, flags shellCmdFlags) error {
+	ctx := cmd.Context()
 	env, err := flags.Env(flags.config.path)
 	if err != nil {
 		return err
 	}
+
 	// Check the directory exists.
 	box, err := devbox.Open(&devopt.Opts{
 		Dir:         flags.config.path,
@@ -91,9 +96,22 @@ func runShellCmd(cmd *cobra.Command, flags shellCmdFlags) error {
 		return shellInceptionErrorMsg("devbox shell")
 	}
 
-	return box.Shell(cmd.Context(), devopt.EnvOptions{
-		OmitNixEnv: flags.omitNixEnv,
-		Pure:       flags.pure,
+	return box.Shell(ctx, devopt.EnvOptions{
+		Hooks: devopt.LifecycleHooks{
+			OnStaleState: func() {
+				if !flags.recomputeEnv {
+					ux.FHidableWarning(
+						ctx,
+						cmd.ErrOrStderr(),
+						devbox.StateOutOfDateMessage,
+						"with --recompute=true",
+					)
+				}
+			},
+		},
+		OmitNixEnv:    flags.omitNixEnv,
+		Pure:          flags.pure,
+		SkipRecompute: !flags.recomputeEnv,
 	})
 }
 

internal/boxcli/shellenv.go

@@ -116,11 +116,23 @@ func shellEnvFunc(
 	}
 
 	envStr, err := box.EnvExports(ctx, devopt.EnvExportsOpts{
-		DontRecomputeEnvironment: !flags.recomputeEnv,
 		EnvOptions: devopt.EnvOptions{
+			Hooks: devopt.LifecycleHooks{
+				OnStaleState: func() {
+					if !flags.recomputeEnv {
+						ux.FHidableWarning(
+							ctx,
+							cmd.ErrOrStderr(),
+							devbox.StateOutOfDateMessage,
+							box.RefreshAliasOrCommand(),
+						)
+					}
+				},
+			},
 			OmitNixEnv:        flags.omitNixEnv,
 			PreservePathStack: flags.preservePathStack,
 			Pure:              flags.pure,
+			SkipRecompute:     !flags.recomputeEnv,
 		},
 		NoRefreshAlias: flags.noRefreshAlias,
 		RunHooks:       flags.runInitHook,

internal/devbox/devbox.go

@@ -351,22 +351,7 @@ func (d *Devbox) EnvExports(ctx context.Context, opts devopt.EnvExportsOpts) (st
 	var envs map[string]string
 	var err error
 
-	if opts.DontRecomputeEnvironment {
-		upToDate, _ := d.lockfile.IsUpToDateAndInstalled(isFishShell())
-		if !upToDate {
-			ux.FHidableWarning(
-				ctx,
-				d.stderr,
-				StateOutOfDateMessage,
-				d.refreshAliasOrCommand(),
-			)
-		}
-
-		envs, err = d.computeEnv(ctx, true /*usePrintDevEnvCache*/, opts.EnvOptions)
-	} else {
-		envs, err = d.ensureStateIsUpToDateAndComputeEnv(ctx, opts.EnvOptions)
-	}
-
+	envs, err = d.ensureStateIsUpToDateAndComputeEnv(ctx, opts.EnvOptions)
 	if err != nil {
 		return "", err
 	}
@@ -819,23 +804,35 @@ func (d *Devbox) ensureStateIsUpToDateAndComputeEnv(
 ) (map[string]string, error) {
 	defer debug.FunctionTimer().End()
 
-	// When ensureStateIsUpToDate is called with ensure=true, it always
-	// returns early if the lockfile is up to date. So we don't need to check here
-	if err := d.ensureStateIsUpToDate(ctx, ensure); isConnectionError(err) {
-		if !fileutil.Exists(d.nixPrintDevEnvCachePath()) {
-			ux.Ferrorf(
+	upToDate, err := d.lockfile.IsUpToDateAndInstalled(isFishShell())
+	if err != nil {
+		return nil, err
+	}
+	if !upToDate {
+		if envOpts.Hooks.OnStaleState != nil {
+			envOpts.Hooks.OnStaleState()
+		}
+	}
+
+	if !envOpts.SkipRecompute {
+		// When ensureStateIsUpToDate is called with ensure=true, it always
+		// returns early if the lockfile is up to date. So we don't need to check here
+		if err := d.ensureStateIsUpToDate(ctx, ensure); isConnectionError(err) {
+			if !fileutil.Exists(d.nixPrintDevEnvCachePath()) {
+				ux.Ferrorf(
+					d.stderr,
+					"Error connecting to the internet and no cached environment found. Aborting.\n",
+				)
+				return nil, err
+			}
+			ux.Fwarningf(
 				d.stderr,
-				"Error connecting to the internet and no cached environment found. Aborting.\n",
+				"Error connecting to the internet. Will attempt to use cached environment.\n",
 			)
+		} else if err != nil {
+			// Some other non connection error, just return it.
 			return nil, err
 		}
-		ux.Fwarningf(
-			d.stderr,
-			"Error connecting to the internet. Will attempt to use cached environment.\n",
-		)
-	} else if err != nil {
-		// Some other non connection error, just return it.
-		return nil, err
 	}
 
 	// Since ensureStateIsUpToDate calls computeEnv when not up do date,

internal/devbox/devopt/devboxopts.go

@@ -62,18 +62,24 @@ type UpdateOpts struct {
 }
 
 type EnvExportsOpts struct {
-	DontRecomputeEnvironment bool
-	EnvOptions               EnvOptions
-	NoRefreshAlias           bool
-	RunHooks                 bool
+	EnvOptions     EnvOptions
+	NoRefreshAlias bool
+	RunHooks       bool
 }
 
 // EnvOptions configure the Devbox Environment in the `computeEnv` function.
 // - These options are commonly set by flags in some Devbox commands
 // like `shellenv`, `shell` and `run`.
 // - The struct is designed for the "common case" to be zero-initialized as `EnvOptions{}`.
 type EnvOptions struct {
+	Hooks             LifecycleHooks
 	OmitNixEnv        bool
 	PreservePathStack bool
 	Pure              bool
+	SkipRecompute     bool
+}
+
+type LifecycleHooks struct {
+	// OnStaleState is called when the Devbox state is out of date, AND it is not being recomputed.
+	OnStaleState func()
 }

internal/devbox/packages.go

@@ -303,7 +303,7 @@ func (d *Devbox) ensureStateIsUpToDate(ctx context.Context, mode installMode) er
 			ctx,
 			d.stderr,
 			StateOutOfDateMessage,
-			d.refreshAliasOrCommand(),
+			d.RefreshAliasOrCommand(),
 		)
 	}
 

internal/devbox/refresh.go

@@ -26,7 +26,7 @@ func (d *Devbox) isGlobal() bool {
 // In some cases (e.g. 2 non-global projects somehow active at the same time),
 // refresh might not match. This is a tiny edge case, so no need to make UX
 // great, we just print out the entire command.
-func (d *Devbox) refreshAliasOrCommand() string {
+func (d *Devbox) RefreshAliasOrCommand() string {
 	if !d.isRefreshAliasSet() {
 		// even if alias is not set, it might still be set by the end of this process
 		return fmt.Sprintf("`%s` or `%s`", d.refreshAliasName(), d.refreshCmd())