[info] Ensure devbox info works with versioned packages (#997)

## Summary

`devbox info php@8` now works correctly

## How was it tested?

```bash
devbox info php
devbox info php@8
devbox info php@latest
```

Author: mikeland73

internal/impl/devbox.go

@@ -317,7 +317,7 @@ func (d *Devbox) ShellEnvHash(ctx context.Context) (string, error) {
 }
 
 func (d *Devbox) Info(pkg string, markdown bool) error {
-	info := nix.PkgInfo(d.cfg.Nixpkgs.Commit, pkg)
+	info := nix.PkgInfo(pkg, d.lockfile)
 	if info == nil {
 		_, err := fmt.Fprintf(d.writer, "Package %s not found\n", pkg)
 		return errors.WithStack(err)

internal/impl/global.go

@@ -92,7 +92,7 @@ func (d *Devbox) RemoveGlobal(pkgs ...string) error {
 		return err
 	}
 	for _, pkg := range lo.Intersect(d.cfg.Packages, pkgs) {
-		if err := nix.ProfileRemove(profilePath, plansdk.DefaultNixpkgsCommit, pkg); err != nil {
+		if err := nix.ProfileRemove(profilePath, pkg, d.lockfile); err != nil {
 			if errors.Is(err, nix.ErrPackageNotInstalled) {
 				removed = append(removed, pkg)
 			} else {

internal/nix/profile.go

@@ -255,8 +255,8 @@ func ProfileInstall(args *ProfileInstallArgs) error {
 	return nil
 }
 
-func ProfileRemove(profilePath, nixpkgsCommit, pkg string) error {
-	info := PkgInfo(nixpkgsCommit, pkg)
+func ProfileRemove(profilePath, pkg string, lock lock.Locker) error {
+	info := PkgInfo(pkg, lock)
 	if info == nil {
 		return ErrPackageNotFound
 	}

internal/nix/search.go

@@ -31,13 +31,13 @@ func (i *Info) String() string {
 	return fmt.Sprintf("%s-%s", i.PName, i.Version)
 }
 
-func PkgInfo(nixpkgsCommit, pkg string) *Info {
-	exactPackage := fmt.Sprintf("%s#%s", FlakeNixpkgs(nixpkgsCommit), pkg)
-	if nixpkgsCommit == "" {
-		exactPackage = fmt.Sprintf("nixpkgs#%s", pkg)
+func PkgInfo(pkg string, lock lock.Locker) *Info {
+	locked, err := lock.Resolve(pkg)
+	if err != nil {
+		return nil
 	}
 
-	results := search(exactPackage)
+	results := search(locked.Resolved)
 	if len(results) == 0 {
 		return nil
 	}

testscripts/info/info.test.txt

@@ -2,6 +2,10 @@ exec devbox init
 exec devbox info hello
 stdout hello-.
 
+exec devbox init
+exec devbox info hello@latest
+stdout hello-.
+
 exec devbox init
 exec devbox info notapackage
 stdout 'Package notapackage not found'