diff --git a/src/cmd/go/internal/par/bench_test.go b/src/cmd/go/internal/cfg/bench_test.go
similarity index 94%
rename from src/cmd/go/internal/par/bench_test.go
rename to src/cmd/go/internal/cfg/bench_test.go
index 568c1ebe0c7a30..31a00f7e5fa5ea 100644
--- a/src/cmd/go/internal/par/bench_test.go
+++ b/src/cmd/go/internal/cfg/bench_test.go
@@ -1,4 +1,4 @@
-package par
+package cfg
 
 import (
 	"testing"
diff --git a/src/cmd/go/internal/cfg/cfg.go b/src/cmd/go/internal/cfg/cfg.go
index c8e33f21d3b078..7d54771bddd5c6 100644
--- a/src/cmd/go/internal/cfg/cfg.go
+++ b/src/cmd/go/internal/cfg/cfg.go
@@ -21,7 +21,6 @@ import (
 	"sync"
 
 	"cmd/go/internal/fsys"
-	"cmd/go/internal/par"
 )
 
 // Global build parameters (used during package load)
@@ -161,7 +160,7 @@ func defaultContext() build.Context {
 		if ctxt.CgoEnabled {
 			if os.Getenv("CC") == "" {
 				cc := DefaultCC(ctxt.GOOS, ctxt.GOARCH)
-				if _, err := par.LookPath(cc); err != nil {
+				if _, err := LookPath(cc); err != nil {
 					ctxt.CgoEnabled = false
 				}
 			}
diff --git a/src/cmd/go/internal/par/lookpath.go b/src/cmd/go/internal/cfg/lookpath.go
similarity index 98%
rename from src/cmd/go/internal/par/lookpath.go
rename to src/cmd/go/internal/cfg/lookpath.go
index 6fa4a1dc53f1dc..13f30be6598d09 100644
--- a/src/cmd/go/internal/par/lookpath.go
+++ b/src/cmd/go/internal/cfg/lookpath.go
@@ -1,4 +1,4 @@
-package par
+package cfg
 
 import (
 	"os/exec"
diff --git a/src/cmd/go/internal/generate/generate.go b/src/cmd/go/internal/generate/generate.go
index 50990bbe5a3273..14197814eedfbe 100644
--- a/src/cmd/go/internal/generate/generate.go
+++ b/src/cmd/go/internal/generate/generate.go
@@ -26,7 +26,6 @@ import (
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/load"
 	"cmd/go/internal/modload"
-	"cmd/go/internal/par"
 	"cmd/go/internal/str"
 	"cmd/go/internal/work"
 )
@@ -480,7 +479,7 @@ func (g *Generator) exec(words []string) {
 		// intends to use the same 'go' as 'go generate' itself.
 		// Prefer to resolve the binary from GOROOT/bin, and for consistency
 		// prefer to resolve any other commands there too.
-		gorootBinPath, err := par.LookPath(filepath.Join(cfg.GOROOTbin, path))
+		gorootBinPath, err := cfg.LookPath(filepath.Join(cfg.GOROOTbin, path))
 		if err == nil {
 			path = gorootBinPath
 		}
diff --git a/src/cmd/go/internal/load/pkg.go b/src/cmd/go/internal/load/pkg.go
index a0b69000d44fee..a899b64d5b40d9 100644
--- a/src/cmd/go/internal/load/pkg.go
+++ b/src/cmd/go/internal/load/pkg.go
@@ -2479,7 +2479,7 @@ func (p *Package) setBuildInfo(ctx context.Context, autoVCS bool) {
 			goto omitVCS
 		}
 		if cfg.BuildBuildvcs == "auto" && vcsCmd != nil && vcsCmd.Cmd != "" {
-			if _, err := par.LookPath(vcsCmd.Cmd); err != nil {
+			if _, err := cfg.LookPath(vcsCmd.Cmd); err != nil {
 				// We fould a repository, but the required VCS tool is not present.
 				// "-buildvcs=auto" means that we should silently drop the VCS metadata.
 				goto omitVCS
diff --git a/src/cmd/go/internal/script/cmds.go b/src/cmd/go/internal/script/cmds.go
index 6cfc6e1dcc80ae..ecd35ff8b122c1 100644
--- a/src/cmd/go/internal/script/cmds.go
+++ b/src/cmd/go/internal/script/cmds.go
@@ -5,7 +5,7 @@
 package script
 
 import (
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"cmd/go/internal/robustio"
 	"errors"
 	"fmt"
@@ -825,7 +825,7 @@ func Program(name string, cancel func(*exec.Cmd) error, waitDelay time.Duration)
 		},
 		func(s *State, args ...string) (WaitFunc, error) {
 			lookPathOnce.Do(func() {
-				path, pathErr = par.LookPath(name)
+				path, pathErr = cfg.LookPath(name)
 			})
 			if pathErr != nil {
 				return nil, pathErr
diff --git a/src/cmd/go/internal/script/scripttest/scripttest.go b/src/cmd/go/internal/script/scripttest/scripttest.go
index 714dd320268daa..6d7bd7863b9f42 100644
--- a/src/cmd/go/internal/script/scripttest/scripttest.go
+++ b/src/cmd/go/internal/script/scripttest/scripttest.go
@@ -7,7 +7,7 @@ package scripttest
 
 import (
 	"bufio"
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"cmd/go/internal/script"
 	"errors"
 	"io"
@@ -137,7 +137,7 @@ func CachedExec() script.Cond {
 	return script.CachedCondition(
 		"<suffix> names an executable in the test binary's PATH",
 		func(name string) (bool, error) {
-			_, err := par.LookPath(name)
+			_, err := cfg.LookPath(name)
 			return err == nil, nil
 		})
 }
diff --git a/src/cmd/go/internal/toolchain/select.go b/src/cmd/go/internal/toolchain/select.go
index 1ae08299ae3868..c3985dedc64620 100644
--- a/src/cmd/go/internal/toolchain/select.go
+++ b/src/cmd/go/internal/toolchain/select.go
@@ -23,7 +23,6 @@ import (
 	"cmd/go/internal/gover"
 	"cmd/go/internal/modfetch"
 	"cmd/go/internal/modload"
-	"cmd/go/internal/par"
 	"cmd/go/internal/run"
 
 	"golang.org/x/mod/module"
@@ -283,7 +282,7 @@ func Exec(gotoolchain string) {
 	// Look in PATH for the toolchain before we download one.
 	// This allows custom toolchains as well as reuse of toolchains
 	// already installed using go install golang.org/dl/go1.2.3@latest.
-	if exe, err := par.LookPath(gotoolchain); err == nil {
+	if exe, err := cfg.LookPath(gotoolchain); err == nil {
 		execGoToolchain(gotoolchain, "", exe)
 	}
 
diff --git a/src/cmd/go/internal/vcs/vcs.go b/src/cmd/go/internal/vcs/vcs.go
index a6ead9ec73728e..d10f1d29d83123 100644
--- a/src/cmd/go/internal/vcs/vcs.go
+++ b/src/cmd/go/internal/vcs/vcs.go
@@ -24,7 +24,6 @@ import (
 
 	"cmd/go/internal/base"
 	"cmd/go/internal/cfg"
-	"cmd/go/internal/par"
 	"cmd/go/internal/search"
 	"cmd/go/internal/str"
 	"cmd/go/internal/web"
@@ -681,7 +680,7 @@ func (v *Cmd) run1(dir string, cmdline string, keyval []string, verbose bool) ([
 		args = args[2:]
 	}
 
-	_, err := par.LookPath(v.Cmd)
+	_, err := cfg.LookPath(v.Cmd)
 	if err != nil {
 		fmt.Fprintf(os.Stderr,
 			"go: missing %s command. See https://golang.org/s/gogetcmd\n",
diff --git a/src/cmd/go/internal/vcweb/fossil.go b/src/cmd/go/internal/vcweb/fossil.go
index b84736107c93f3..472689edb6fa0b 100644
--- a/src/cmd/go/internal/vcweb/fossil.go
+++ b/src/cmd/go/internal/vcweb/fossil.go
@@ -5,7 +5,7 @@
 package vcweb
 
 import (
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"fmt"
 	"log"
 	"net/http"
@@ -23,7 +23,7 @@ type fossilHandler struct {
 
 func (h *fossilHandler) Available() bool {
 	h.once.Do(func() {
-		h.fossilPath, h.fossilPathErr = par.LookPath("fossil")
+		h.fossilPath, h.fossilPathErr = cfg.LookPath("fossil")
 	})
 	return h.fossilPathErr == nil
 }
diff --git a/src/cmd/go/internal/vcweb/git.go b/src/cmd/go/internal/vcweb/git.go
index 01d70556259ec0..98f378d8b5a8c4 100644
--- a/src/cmd/go/internal/vcweb/git.go
+++ b/src/cmd/go/internal/vcweb/git.go
@@ -5,7 +5,7 @@
 package vcweb
 
 import (
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"log"
 	"net/http"
 	"net/http/cgi"
@@ -27,7 +27,7 @@ func (h *gitHandler) Available() bool {
 		return false
 	}
 	h.once.Do(func() {
-		h.gitPath, h.gitPathErr = par.LookPath("git")
+		h.gitPath, h.gitPathErr = cfg.LookPath("git")
 	})
 	return h.gitPathErr == nil
 }
diff --git a/src/cmd/go/internal/vcweb/hg.go b/src/cmd/go/internal/vcweb/hg.go
index 6c877cfad4a2df..40e91fd20950da 100644
--- a/src/cmd/go/internal/vcweb/hg.go
+++ b/src/cmd/go/internal/vcweb/hg.go
@@ -6,7 +6,7 @@ package vcweb
 
 import (
 	"bufio"
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"context"
 	"errors"
 	"io"
@@ -30,7 +30,7 @@ type hgHandler struct {
 
 func (h *hgHandler) Available() bool {
 	h.once.Do(func() {
-		h.hgPath, h.hgPathErr = par.LookPath("hg")
+		h.hgPath, h.hgPathErr = cfg.LookPath("hg")
 	})
 	return h.hgPathErr == nil
 }
diff --git a/src/cmd/go/internal/vcweb/svn.go b/src/cmd/go/internal/vcweb/svn.go
index 065484ea6614cb..55361c2afacb43 100644
--- a/src/cmd/go/internal/vcweb/svn.go
+++ b/src/cmd/go/internal/vcweb/svn.go
@@ -5,7 +5,7 @@
 package vcweb
 
 import (
-	"cmd/go/internal/par"
+	"cmd/go/internal/cfg"
 	"io"
 	"log"
 	"net"
@@ -55,7 +55,7 @@ type svnState struct {
 
 func (h *svnHandler) Available() bool {
 	h.pathOnce.Do(func() {
-		h.svnservePath, h.svnserveErr = par.LookPath("svnserve")
+		h.svnservePath, h.svnserveErr = cfg.LookPath("svnserve")
 	})
 	return h.svnserveErr == nil
 }
diff --git a/src/cmd/go/internal/work/build.go b/src/cmd/go/internal/work/build.go
index 3f725f05a01e1c..0f9c2b358072c3 100644
--- a/src/cmd/go/internal/work/build.go
+++ b/src/cmd/go/internal/work/build.go
@@ -21,7 +21,6 @@ import (
 	"cmd/go/internal/fsys"
 	"cmd/go/internal/load"
 	"cmd/go/internal/modload"
-	"cmd/go/internal/par"
 	"cmd/go/internal/search"
 	"cmd/go/internal/trace"
 )
@@ -898,7 +897,7 @@ func FindExecCmd() []string {
 	if cfg.Goos == runtime.GOOS && cfg.Goarch == runtime.GOARCH {
 		return ExecCmd
 	}
-	path, err := par.LookPath(fmt.Sprintf("go_%s_%s_exec", cfg.Goos, cfg.Goarch))
+	path, err := cfg.LookPath(fmt.Sprintf("go_%s_%s_exec", cfg.Goos, cfg.Goarch))
 	if err == nil {
 		ExecCmd = []string{path}
 	}
diff --git a/src/cmd/go/internal/work/buildid.go b/src/cmd/go/internal/work/buildid.go
index f52497e78a1663..953d4679cd0125 100644
--- a/src/cmd/go/internal/work/buildid.go
+++ b/src/cmd/go/internal/work/buildid.go
@@ -15,7 +15,6 @@ import (
 	"cmd/go/internal/cache"
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/fsys"
-	"cmd/go/internal/par"
 	"cmd/go/internal/str"
 	"cmd/internal/buildid"
 	"cmd/internal/quoted"
@@ -271,7 +270,7 @@ func (b *Builder) gccToolID(name, language string) (id, exe string, err error) {
 		}
 		exe = fields[0]
 		if !strings.ContainsAny(exe, `/\`) {
-			if lp, err := par.LookPath(exe); err == nil {
+			if lp, err := cfg.LookPath(exe); err == nil {
 				exe = lp
 			}
 		}
diff --git a/src/cmd/go/internal/work/exec.go b/src/cmd/go/internal/work/exec.go
index bec6751068950b..1d7ec0bf5d897b 100644
--- a/src/cmd/go/internal/work/exec.go
+++ b/src/cmd/go/internal/work/exec.go
@@ -39,7 +39,6 @@ import (
 	"cmd/go/internal/gover"
 	"cmd/go/internal/load"
 	"cmd/go/internal/modload"
-	"cmd/go/internal/par"
 	"cmd/go/internal/str"
 	"cmd/go/internal/trace"
 	"cmd/internal/buildid"
@@ -2374,7 +2373,7 @@ func (b *Builder) runOut(a *Action, dir string, env []string, cmdargs ...any) ([
 	}
 
 	var buf bytes.Buffer
-	path, err := par.LookPath(cmdline[0])
+	path, err := cfg.LookPath(cmdline[0])
 	if err != nil {
 		return nil, err
 	}
@@ -3018,7 +3017,7 @@ func (b *Builder) gccCompilerID(compiler string) (id cache.ActionID, ok bool) {
 	//
 	// Otherwise, we compute a new validation description
 	// and compiler id (below).
-	exe, err := par.LookPath(compiler)
+	exe, err := cfg.LookPath(compiler)
 	if err != nil {
 		return cache.ActionID{}, false
 	}
diff --git a/src/cmd/go/internal/work/gccgo.go b/src/cmd/go/internal/work/gccgo.go
index e38d06a89bcc5a..8893d57ff7e734 100644
--- a/src/cmd/go/internal/work/gccgo.go
+++ b/src/cmd/go/internal/work/gccgo.go
@@ -16,7 +16,6 @@ import (
 	"cmd/go/internal/cfg"
 	"cmd/go/internal/fsys"
 	"cmd/go/internal/load"
-	"cmd/go/internal/par"
 	"cmd/go/internal/str"
 	"cmd/internal/pkgpath"
 )
@@ -33,7 +32,7 @@ func init() {
 	if GccgoName == "" {
 		GccgoName = "gccgo"
 	}
-	GccgoBin, gccgoErr = par.LookPath(GccgoName)
+	GccgoBin, gccgoErr = cfg.LookPath(GccgoName)
 }
 
 func (gccgoToolchain) compiler() string {