diff --git a/go.mod b/go.mod
index 192d54f0e49..247bef22adb 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,8 @@ require (
 	cuelang.org/go v0.4.3
 	github.com/bmatcuk/doublestar/v4 v4.2.0
 	github.com/denisbrodbeck/machineid v1.0.1
+	github.com/fatih/color v1.13.0
+	github.com/google/go-cmp v0.4.0
 	github.com/imdario/mergo v0.3.13
 	github.com/pelletier/go-toml/v2 v2.0.5
 	github.com/pkg/errors v0.9.1
@@ -24,7 +26,6 @@ require (
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
 	github.com/cockroachdb/apd/v2 v2.0.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fatih/color v1.13.0 // indirect
 	github.com/google/uuid v1.2.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
diff --git a/go.sum b/go.sum
index 7cb5c719104..ab7d7531fe1 100644
--- a/go.sum
+++ b/go.sum
@@ -19,6 +19,7 @@ github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
 github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
 github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/imdario/mergo v0.3.13 h1:lFzP57bqS/wsqKssCGmtLAb8A0wKjLGrve2q3PPVcBk=
@@ -81,6 +82,7 @@ golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/nix/shell.go b/nix/shell.go
index ba51287fe62..f9235be6430 100644
--- a/nix/shell.go
+++ b/nix/shell.go
@@ -118,7 +118,7 @@ func (s *Shell) Run(nixPath string) error {
 
 // execCommand is a command that replaces the current shell with s.
 func (s *Shell) execCommand() string {
-	shellrc, err := writeDevboxShellrc(s.userShellrcPath, s.UserInitHook)
+	shellrc, err := writeDevboxShellrc(s.userShellrcPath, s.UserInitHook, os.Environ())
 	if err != nil {
 		debug.Log("Failed to write devbox shellrc: %v", err)
 		return "exec " + s.binPath
@@ -126,20 +126,25 @@ func (s *Shell) execCommand() string {
 
 	switch s.name {
 	case shBash:
-		return fmt.Sprintf(`exec /usr/bin/env ORIGINAL_PATH="%s" %s --rcfile "%s"`,
-			os.Getenv("PATH"), s.binPath, shellrc)
+		return fmt.Sprintf(`exec %s --rcfile "%s"`, s.binPath, shellrc)
 	case shZsh:
-		return fmt.Sprintf(`exec /usr/bin/env ORIGINAL_PATH="%s" ZDOTDIR="%s" %s`,
-			os.Getenv("PATH"), filepath.Dir(shellrc), s.binPath)
+		return fmt.Sprintf(`exec /usr/bin/env ZDOTDIR="%s" %s`, filepath.Dir(shellrc), s.binPath)
 	case shKsh, shPosix:
-		return fmt.Sprintf(`exec /usr/bin/env ORIGINAL_PATH="%s" ENV="%s" %s `,
-			os.Getenv("PATH"), shellrc, s.binPath)
+		return fmt.Sprintf(`exec /usr/bin/env ENV="%s" %s`, shellrc, s.binPath)
 	default:
 		return "exec " + s.binPath
 	}
 }
 
-func writeDevboxShellrc(userShellrcPath string, userHook string) (path string, err error) {
+func writeDevboxShellrc(userShellrcPath string, userHook string, env []string) (path string, err error) {
+	if userShellrcPath == "" {
+		// If this happens, then there's a bug with how we detect shells
+		// and their shellrc paths. If the shell is unknown or we can't
+		// determine the shellrc path, then we should launch a fallback
+		// shell instead.
+		panic("writeDevboxShellrc called with an empty user shellrc path; use the fallback shell instead")
+	}
+
 	// We need a temp dir (as opposed to a temp file) because zsh uses
 	// ZDOTDIR to point to a new directory containing the .zshrc.
 	tmp, err := os.MkdirTemp("", "devbox")
@@ -154,7 +159,22 @@ func writeDevboxShellrc(userShellrcPath string, userHook string) (path string, e
 		userShellrc = []byte{}
 	}
 
-	path = filepath.Join(tmp, filepath.Base(userShellrcPath))
+	var envPath []string
+	for _, kv := range env {
+		key, val, _ := strings.Cut(kv, "=")
+		if key == "PATH" {
+			envPath = filepath.SplitList(val)
+			break
+		}
+	}
+
+	// If the user already has a shellrc file, then give the devbox shellrc
+	// file the same name. Otherwise, use an arbitrary name of "shellrc".
+	shellrcName := "shellrc"
+	if userShellrcPath != "" {
+		shellrcName = filepath.Base(userShellrcPath)
+	}
+	path = filepath.Join(tmp, shellrcName)
 	shellrcf, err := os.Create(path)
 	if err != nil {
 		return "", fmt.Errorf("write to shell init file: %v", err)
@@ -167,10 +187,12 @@ func writeDevboxShellrc(userShellrcPath string, userHook string) (path string, e
 	}()
 
 	err = shellrcTmpl.Execute(shellrcf, struct {
+		Paths            []string
 		OriginalInit     string
 		OriginalInitPath string
 		UserHook         string
 	}{
+		Paths:            envPath,
 		OriginalInit:     string(bytes.TrimSpace(userShellrc)),
 		OriginalInitPath: filepath.Clean(userShellrcPath),
 		UserHook:         strings.TrimSpace(userHook),
diff --git a/nix/shell_test.go b/nix/shell_test.go
new file mode 100644
index 00000000000..db7af0991bc
--- /dev/null
+++ b/nix/shell_test.go
@@ -0,0 +1,89 @@
+package nix
+
+import (
+	"errors"
+	"flag"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+// update overwrites golden files with the new test results.
+var update = flag.Bool("update", false, "update the golden files with the test results")
+
+func TestWriteDevboxShellrc(t *testing.T) {
+	testdirs, err := filepath.Glob("testdata/shellrc/*")
+	if err != nil {
+		t.Fatal("Error globbing testdata:", err)
+	}
+
+	// Load up all the necessary data from each testdata/shellrc directory
+	// into a slice of tests cases.
+	tests := make([]struct {
+		name            string
+		env             []string
+		hook            string
+		shellrcPath     string
+		goldShellrcPath string
+		goldShellrc     []byte
+	}, len(testdirs))
+	for i, path := range testdirs {
+		test := &tests[i]
+		test.name = filepath.Base(path)
+		if b, err := os.ReadFile(filepath.Join(path, "env")); err == nil {
+			test.env = strings.Split(string(b), "\n")
+		}
+		if b, err := os.ReadFile(filepath.Join(path, "hook")); err == nil {
+			test.hook = string(b)
+		}
+		test.shellrcPath = filepath.Join(path, "shellrc")
+		if _, err := os.Stat(test.shellrcPath); errors.Is(err, os.ErrNotExist) {
+			test.shellrcPath = "noshellrc"
+		}
+		test.goldShellrcPath = filepath.Join(path, "shellrc.golden")
+		test.goldShellrc, err = os.ReadFile(test.goldShellrcPath)
+		if err != nil {
+			t.Fatal("Got error reading golden file:", err)
+		}
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			gotPath, err := writeDevboxShellrc(test.shellrcPath, test.hook, test.env)
+			if err != nil {
+				t.Fatal("Got writeDevboxShellrc error:", err)
+			}
+			gotShellrc, err := os.ReadFile(gotPath)
+			if err != nil {
+				t.Fatalf("Got error reading generated shellrc at %s: %v", gotPath, err)
+			}
+
+			// Overwrite the golden file if the -update flag was
+			// set, and then proceed normally. The test should
+			// always pass in this case.
+			if *update {
+				err = os.WriteFile(test.goldShellrcPath, gotShellrc, 0666)
+				if err != nil {
+					t.Error("Error updating golden files:", err)
+				}
+			}
+			goldShellrc, err := os.ReadFile(test.goldShellrcPath)
+			if err != nil {
+				t.Fatal("Got error reading golden file:", err)
+			}
+			diff := cmp.Diff(goldShellrc, gotShellrc)
+			if diff != "" {
+				t.Errorf(strings.TrimSpace(`
+Generated shellrc != shellrc.golden (-shellrc.golden +shellrc):
+
+	%s
+If the new shellrc is correct, you can update the golden file with:
+
+	go test -run "^%s$" -update`), diff, t.Name())
+			}
+		})
+	}
+}
diff --git a/nix/shellrc.tmpl b/nix/shellrc.tmpl
index 827f8590d38..9a4b249dcfd 100644
--- a/nix/shellrc.tmpl
+++ b/nix/shellrc.tmpl
@@ -12,21 +12,34 @@
 // before and after the user's shellrc. These commands are in the
 // "Devbox Pre/Post-init Hook" sections.
 //
-// The devbox pre/post-init hooks assume two environment variables are already
-// set:
+// The devbox pre/post-init hooks assume a PURE_NIX_PATH environment variable is
+// already set by the shell hook in shell.nix.tmpl. It preserves the PATH set by
+// Nix's "pure" shell mode.
 //
-// - ORIGINAL_PATH - embedded into the command built by Shell.execCommand. It
-//                   preserves the PATH at the time `devbox shell` is invoked.
-// - PURE_NIX_PATH - set by the shell hook in shell.nix.tmpl. It preserves the
-//                   PATH set by Nix's "pure" shell mode.
+// This file is useful for debugging shell errors, so try to keep the generated
+// content readable.
 
  */ -}}
 
 # Begin Devbox Pre-init Hook
 
-# Update the $PATH so that the user's init script has access to all of their
-# non-devbox programs.
-export PATH="$PURE_NIX_PATH:$ORIGINAL_PATH"
+# Don't allow the user's shellrc to re-source Nix since we're already in Nix.
+export __ETC_PROFILE_NIX_SOURCED=1
+
+# Put the Nix packages at the beginning of the PATH to give them priority over
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH"
+
+{{- if .Paths }}
+
+# Append any paths that were in the environment at the time the user launched
+# devbox. This gives the shell access to non-devbox programs, while still
+# preferring the ones that Nix installed.
+{{- range .Paths }}
+PATH="$PATH:{{ . }}"
+{{- end }}
+
+{{- end }}
 
 # End Devbox Pre-init Hook
 
@@ -44,7 +57,7 @@ export PATH="$PURE_NIX_PATH:$ORIGINAL_PATH"
 
 # Update the $PATH again so that the Nix packages take priority over the
 # programs outside of devbox.
-export PATH="$PURE_NIX_PATH:$ORIGINAL_PATH"
+export PATH="$PURE_NIX_PATH:$PATH"
 
 # Prepend to the prompt to make it clear we're in a devbox shell.
 export PS1="(devbox) $PS1"
diff --git a/nix/testdata/shellrc/basic/env b/nix/testdata/shellrc/basic/env
new file mode 100644
index 00000000000..5b9b5a3f6ee
--- /dev/null
+++ b/nix/testdata/shellrc/basic/env
@@ -0,0 +1 @@
+PATH=/a/test/path
diff --git a/nix/testdata/shellrc/basic/hook b/nix/testdata/shellrc/basic/hook
new file mode 100644
index 00000000000..770d44938c5
--- /dev/null
+++ b/nix/testdata/shellrc/basic/hook
@@ -0,0 +1 @@
+echo "Hello from a devbox shell hook!"
diff --git a/nix/testdata/shellrc/basic/shellrc b/nix/testdata/shellrc/basic/shellrc
new file mode 100644
index 00000000000..85834d546fd
--- /dev/null
+++ b/nix/testdata/shellrc/basic/shellrc
@@ -0,0 +1,37 @@
+# Set up the prompt
+
+autoload -Uz promptinit
+promptinit
+#prompt adam1
+
+setopt histignorealldups sharehistory
+
+# Use emacs keybindings even if our EDITOR is set to vi
+bindkey -e
+
+# Keep 1000 lines of history within the shell and save it to ~/.zsh_history:
+HISTSIZE=1000
+SAVEHIST=1000
+HISTFILE=~/.zsh_history
+
+# Use modern completion system
+autoload -Uz compinit
+compinit
+
+zstyle ':completion:*' auto-description 'specify: %d'
+zstyle ':completion:*' completer _expand _complete _correct _approximate
+zstyle ':completion:*' format 'Completing %d'
+zstyle ':completion:*' group-name ''
+zstyle ':completion:*' menu select=2
+eval "$(dircolors -b)"
+zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
+zstyle ':completion:*' list-colors ''
+zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
+zstyle ':completion:*' matcher-list '' 'm:{a-z}={A-Z}' 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=* l:|=*'
+zstyle ':completion:*' menu select=long
+zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
+zstyle ':completion:*' use-compctl false
+zstyle ':completion:*' verbose true
+
+zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*=0=01;31'
+zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
diff --git a/nix/testdata/shellrc/basic/shellrc.golden b/nix/testdata/shellrc/basic/shellrc.golden
new file mode 100644
index 00000000000..4214b441816
--- /dev/null
+++ b/nix/testdata/shellrc/basic/shellrc.golden
@@ -0,0 +1,74 @@
+# Begin Devbox Pre-init Hook
+
+# Don't allow the user's shellrc to re-source Nix since we're already in Nix.
+export __ETC_PROFILE_NIX_SOURCED=1
+
+# Put the Nix packages at the beginning of the PATH to give them priority over
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH"
+
+# Append any paths that were in the environment at the time the user launched
+# devbox. This gives the shell access to non-devbox programs, while still
+# preferring the ones that Nix installed.
+PATH="$PATH:/a/test/path"
+
+# End Devbox Pre-init Hook
+
+# Begin testdata/shellrc/basic/shellrc
+
+# Set up the prompt
+
+autoload -Uz promptinit
+promptinit
+#prompt adam1
+
+setopt histignorealldups sharehistory
+
+# Use emacs keybindings even if our EDITOR is set to vi
+bindkey -e
+
+# Keep 1000 lines of history within the shell and save it to ~/.zsh_history:
+HISTSIZE=1000
+SAVEHIST=1000
+HISTFILE=~/.zsh_history
+
+# Use modern completion system
+autoload -Uz compinit
+compinit
+
+zstyle ':completion:*' auto-description 'specify: %d'
+zstyle ':completion:*' completer _expand _complete _correct _approximate
+zstyle ':completion:*' format 'Completing %d'
+zstyle ':completion:*' group-name ''
+zstyle ':completion:*' menu select=2
+eval "$(dircolors -b)"
+zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
+zstyle ':completion:*' list-colors ''
+zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
+zstyle ':completion:*' matcher-list '' 'm:{a-z}={A-Z}' 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=* l:|=*'
+zstyle ':completion:*' menu select=long
+zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
+zstyle ':completion:*' use-compctl false
+zstyle ':completion:*' verbose true
+
+zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*=0=01;31'
+zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
+
+# End testdata/shellrc/basic/shellrc
+
+# Begin Devbox Post-init Hook
+
+# Update the $PATH again so that the Nix packages take priority over the
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH:$PATH"
+
+# Prepend to the prompt to make it clear we're in a devbox shell.
+export PS1="(devbox) $PS1"
+
+# End Devbox Post-init Hook
+
+# Begin Devbox User Hook
+
+echo "Hello from a devbox shell hook!"
+
+# End Devbox User Hook
diff --git a/nix/testdata/shellrc/nohook/env b/nix/testdata/shellrc/nohook/env
new file mode 100644
index 00000000000..5b9b5a3f6ee
--- /dev/null
+++ b/nix/testdata/shellrc/nohook/env
@@ -0,0 +1 @@
+PATH=/a/test/path
diff --git a/nix/testdata/shellrc/nohook/shellrc b/nix/testdata/shellrc/nohook/shellrc
new file mode 100644
index 00000000000..85834d546fd
--- /dev/null
+++ b/nix/testdata/shellrc/nohook/shellrc
@@ -0,0 +1,37 @@
+# Set up the prompt
+
+autoload -Uz promptinit
+promptinit
+#prompt adam1
+
+setopt histignorealldups sharehistory
+
+# Use emacs keybindings even if our EDITOR is set to vi
+bindkey -e
+
+# Keep 1000 lines of history within the shell and save it to ~/.zsh_history:
+HISTSIZE=1000
+SAVEHIST=1000
+HISTFILE=~/.zsh_history
+
+# Use modern completion system
+autoload -Uz compinit
+compinit
+
+zstyle ':completion:*' auto-description 'specify: %d'
+zstyle ':completion:*' completer _expand _complete _correct _approximate
+zstyle ':completion:*' format 'Completing %d'
+zstyle ':completion:*' group-name ''
+zstyle ':completion:*' menu select=2
+eval "$(dircolors -b)"
+zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
+zstyle ':completion:*' list-colors ''
+zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
+zstyle ':completion:*' matcher-list '' 'm:{a-z}={A-Z}' 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=* l:|=*'
+zstyle ':completion:*' menu select=long
+zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
+zstyle ':completion:*' use-compctl false
+zstyle ':completion:*' verbose true
+
+zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*=0=01;31'
+zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
diff --git a/nix/testdata/shellrc/nohook/shellrc.golden b/nix/testdata/shellrc/nohook/shellrc.golden
new file mode 100644
index 00000000000..08575df05a3
--- /dev/null
+++ b/nix/testdata/shellrc/nohook/shellrc.golden
@@ -0,0 +1,68 @@
+# Begin Devbox Pre-init Hook
+
+# Don't allow the user's shellrc to re-source Nix since we're already in Nix.
+export __ETC_PROFILE_NIX_SOURCED=1
+
+# Put the Nix packages at the beginning of the PATH to give them priority over
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH"
+
+# Append any paths that were in the environment at the time the user launched
+# devbox. This gives the shell access to non-devbox programs, while still
+# preferring the ones that Nix installed.
+PATH="$PATH:/a/test/path"
+
+# End Devbox Pre-init Hook
+
+# Begin testdata/shellrc/nohook/shellrc
+
+# Set up the prompt
+
+autoload -Uz promptinit
+promptinit
+#prompt adam1
+
+setopt histignorealldups sharehistory
+
+# Use emacs keybindings even if our EDITOR is set to vi
+bindkey -e
+
+# Keep 1000 lines of history within the shell and save it to ~/.zsh_history:
+HISTSIZE=1000
+SAVEHIST=1000
+HISTFILE=~/.zsh_history
+
+# Use modern completion system
+autoload -Uz compinit
+compinit
+
+zstyle ':completion:*' auto-description 'specify: %d'
+zstyle ':completion:*' completer _expand _complete _correct _approximate
+zstyle ':completion:*' format 'Completing %d'
+zstyle ':completion:*' group-name ''
+zstyle ':completion:*' menu select=2
+eval "$(dircolors -b)"
+zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
+zstyle ':completion:*' list-colors ''
+zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
+zstyle ':completion:*' matcher-list '' 'm:{a-z}={A-Z}' 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=* l:|=*'
+zstyle ':completion:*' menu select=long
+zstyle ':completion:*' select-prompt %SScrolling active: current selection at %p%s
+zstyle ':completion:*' use-compctl false
+zstyle ':completion:*' verbose true
+
+zstyle ':completion:*:*:kill:*:processes' list-colors '=(#b) #([0-9]#)*=0=01;31'
+zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
+
+# End testdata/shellrc/nohook/shellrc
+
+# Begin Devbox Post-init Hook
+
+# Update the $PATH again so that the Nix packages take priority over the
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH:$PATH"
+
+# Prepend to the prompt to make it clear we're in a devbox shell.
+export PS1="(devbox) $PS1"
+
+# End Devbox Post-init Hook
diff --git a/nix/testdata/shellrc/noshellrc/env b/nix/testdata/shellrc/noshellrc/env
new file mode 100644
index 00000000000..5b9b5a3f6ee
--- /dev/null
+++ b/nix/testdata/shellrc/noshellrc/env
@@ -0,0 +1 @@
+PATH=/a/test/path
diff --git a/nix/testdata/shellrc/noshellrc/hook b/nix/testdata/shellrc/noshellrc/hook
new file mode 100644
index 00000000000..770d44938c5
--- /dev/null
+++ b/nix/testdata/shellrc/noshellrc/hook
@@ -0,0 +1 @@
+echo "Hello from a devbox shell hook!"
diff --git a/nix/testdata/shellrc/noshellrc/shellrc.golden b/nix/testdata/shellrc/noshellrc/shellrc.golden
new file mode 100644
index 00000000000..ace152646f9
--- /dev/null
+++ b/nix/testdata/shellrc/noshellrc/shellrc.golden
@@ -0,0 +1,32 @@
+# Begin Devbox Pre-init Hook
+
+# Don't allow the user's shellrc to re-source Nix since we're already in Nix.
+export __ETC_PROFILE_NIX_SOURCED=1
+
+# Put the Nix packages at the beginning of the PATH to give them priority over
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH"
+
+# Append any paths that were in the environment at the time the user launched
+# devbox. This gives the shell access to non-devbox programs, while still
+# preferring the ones that Nix installed.
+PATH="$PATH:/a/test/path"
+
+# End Devbox Pre-init Hook
+
+# Begin Devbox Post-init Hook
+
+# Update the $PATH again so that the Nix packages take priority over the
+# programs outside of devbox.
+export PATH="$PURE_NIX_PATH:$PATH"
+
+# Prepend to the prompt to make it clear we're in a devbox shell.
+export PS1="(devbox) $PS1"
+
+# End Devbox Post-init Hook
+
+# Begin Devbox User Hook
+
+echo "Hello from a devbox shell hook!"
+
+# End Devbox User Hook