diff --git a/disk/disk.go b/disk/disk.go
index 9803168..1a38d66 100644
--- a/disk/disk.go
+++ b/disk/disk.go
@@ -60,7 +60,8 @@ func unpack(src, name string) error {
 	}
 	uaIface, err := archiver.ByExtension(src)
 	if err != nil {
-		if filepath.Ext(src) == binExt {
+		ext := filepath.Ext(src)
+		if ext == binExt || len(ext) > 3 {
 			dest = filepath.Join(dest, name+binExt)
 			if err := os.Rename(src, dest); err != nil {
 				return err
diff --git a/forge/forge.go b/forge/forge.go
index 4a092a1..7f109f0 100644
--- a/forge/forge.go
+++ b/forge/forge.go
@@ -10,7 +10,7 @@ import (
 )
 
 var (
-	amd64Re   = regexp.MustCompile(`amd64|x86_64|64-bit|[^m]64`)
+	amd64Re   = regexp.MustCompile(`amd64|x86_64|64-bit|[^mhv]64`)
 	linuxRe   = regexp.MustCompile(`linux`)
 	windowsRe = regexp.MustCompile(`windows|\Awin`)
 )
@@ -23,11 +23,13 @@ type Release struct {
 type Asset struct {
 	Name        string
 	DownloadURL string
+	Version     string // Release.Name
 }
 
 type Forger interface {
 	Name() string
-	Latest() (Release, error)
+	latestRelease() (Release, error)
+	tagRelease(tag string) (Release, error)
 }
 
 func splitURI(uri string) (string, []string, error) {
@@ -44,7 +46,7 @@ func splitURI(uri string) (string, []string, error) {
 	return u.String(), paths, nil
 }
 
-func Latest(f Forger) (Asset, error) {
+func TagRelease(f Forger, tag string) (Asset, error) {
 	var asset Asset
 
 	var re *regexp.Regexp
@@ -57,7 +59,41 @@ func Latest(f Forger) (Asset, error) {
 		return asset, fmt.Errorf("%q is not a supported OS", runtime.GOOS)
 	}
 
-	release, err := f.Latest()
+	release, err := f.tagRelease(tag)
+	if err != nil {
+		return asset, fmt.Errorf("could not get %q release: %w", tag, err)
+	}
+
+	for _, a := range release.Assets {
+		if amd64Re.MatchString(a.Name) && re.MatchString(a.Name) {
+			fmt.Printf("found %q\n", a.Name)
+			asset = a
+			break
+		}
+	}
+
+	if asset.Name == "" {
+		return asset, errors.New("no release found for this OS")
+	}
+
+	asset.Version = release.Name
+	return asset, nil
+}
+
+func LatestRelease(f Forger) (Asset, error) {
+	var asset Asset
+
+	var re *regexp.Regexp
+	switch runtime.GOOS {
+	case "linux":
+		re = linuxRe
+	case "windows":
+		re = windowsRe
+	default:
+		return asset, fmt.Errorf("%q is not a supported OS", runtime.GOOS)
+	}
+
+	release, err := f.latestRelease()
 	if err != nil {
 		return asset, fmt.Errorf("could not get latest release: %w", err)
 	}
@@ -74,5 +110,6 @@ func Latest(f Forger) (Asset, error) {
 		return asset, errors.New("no release found for this OS")
 	}
 
+	asset.Version = release.Name
 	return asset, nil
 }
diff --git a/forge/gitea.go b/forge/gitea.go
index fc443f9..4badb61 100644
--- a/forge/gitea.go
+++ b/forge/gitea.go
@@ -7,8 +7,6 @@ import (
 	"net/http"
 )
 
-var _ Forger = (*Gitea)(nil)
-
 type Gitea struct {
 	BaseURL string
 	Owner   string
@@ -40,7 +38,7 @@ func (g Gitea) Name() string {
 	return g.Repo
 }
 
-func (g Gitea) Latest() (Release, error) {
+func (g Gitea) latestRelease() (Release, error) {
 	var release Release
 
 	var releases []GiteaRelease
@@ -70,3 +68,29 @@ func (g Gitea) Latest() (Release, error) {
 
 	return release, nil
 }
+
+func (g Gitea) tagRelease(tag string) (Release, error) {
+	var release Release
+
+	u := fmt.Sprintf("%s/api/v1/repos/%s/%s/releases/tags/%s", g.BaseURL, g.Owner, g.Repo, tag)
+	res, err := http.Get(u)
+	if err != nil {
+		return release, err
+	}
+	defer res.Body.Close()
+
+	var r GiteaRelease
+	if err := json.NewDecoder(res.Body).Decode(&r); err != nil {
+		return release, err
+	}
+
+	release.Name = r.TagName
+	for _, a := range r.Assets {
+		release.Assets = append(release.Assets, Asset{
+			Name:        a.Name,
+			DownloadURL: a.BrowserDownloadURL,
+		})
+	}
+
+	return release, nil
+}
diff --git a/forge/github.go b/forge/github.go
index 38eb0d9..f24ee86 100644
--- a/forge/github.go
+++ b/forge/github.go
@@ -6,8 +6,6 @@ import (
 	"net/http"
 )
 
-var _ Forger = (*GitHub)(nil)
-
 type GitHub struct {
 	Owner string
 	Repo  string
@@ -36,7 +34,7 @@ func (g GitHub) Name() string {
 	return g.Repo
 }
 
-func (g GitHub) Latest() (Release, error) {
+func (g GitHub) latestRelease() (Release, error) {
 	var release Release
 
 	var r GitHubRelease
@@ -61,3 +59,29 @@ func (g GitHub) Latest() (Release, error) {
 
 	return release, nil
 }
+
+func (g GitHub) tagRelease(tag string) (Release, error) {
+	var release Release
+
+	var r GitHubRelease
+	u := fmt.Sprintf("https://api.github.com/repos/%s/%s/releases/tags/%s", g.Owner, g.Repo, tag)
+	res, err := http.Get(u)
+	if err != nil {
+		return release, err
+	}
+	defer res.Body.Close()
+
+	if err := json.NewDecoder(res.Body).Decode(&r); err != nil {
+		return release, err
+	}
+
+	release.Name = r.TagName
+	for _, a := range r.Assets {
+		release.Assets = append(release.Assets, Asset{
+			Name:        a.Name,
+			DownloadURL: a.BrowserDownloadURL,
+		})
+	}
+
+	return release, nil
+}
diff --git a/main.go b/main.go
index 47f9bf8..e06f3b6 100644
--- a/main.go
+++ b/main.go
@@ -9,7 +9,6 @@ import (
 	"go.jolheiser.com/eget/disk"
 	"go.jolheiser.com/eget/forge"
 	"go.jolheiser.com/eget/meta"
-	"go.jolheiser.com/eget/shell"
 )
 
 var Version = "develop"
@@ -24,18 +23,16 @@ func main() {
 	fs.BoolVar(updateFlag, "u", *updateFlag, "--update")
 	deleteFlag := flag.Bool("delete", false, "Delete package")
 	fs.BoolVar(deleteFlag, "d", *deleteFlag, "--delete")
-	nuFlag := fs.Bool("nu", false, "Write out Nu environment")
+	syncFlag := fs.Bool("sync", false, "Sync packages")
 	if err := fs.Parse(os.Args[1:]); err != nil {
 		fs.Usage()
 		return
 	}
 
-	if *nuFlag {
-		nu, err := shell.Nu()
-		if err != nil {
+	if *syncFlag {
+		if err := sync(); err != nil {
 			panic(err)
 		}
-		fmt.Println(nu)
 		return
 	}
 
@@ -68,7 +65,7 @@ func main() {
 		return
 	}
 
-	asset, err := forge.Latest(f)
+	asset, err := forge.LatestRelease(f)
 	if err != nil {
 		panic(err)
 	}
@@ -78,7 +75,7 @@ func main() {
 		if err != nil {
 			panic(err)
 		}
-		if strings.EqualFold(asset.Name, m.Packages[name]) {
+		if strings.EqualFold(asset.Version, m.Packages[name].Version) {
 			fmt.Printf("%q is up-to-date\n", name)
 			return
 		}
@@ -91,7 +88,7 @@ func main() {
 		panic(err)
 	}
 
-	if err := meta.Upsert(name, asset.Name); err != nil {
+	if err := meta.Upsert(name, uri, asset.Version); err != nil {
 		panic(err)
 	}
 
@@ -106,3 +103,36 @@ func uriName(uri string) string {
 	parts := strings.FieldsFunc(uri, func(r rune) bool { return r == '/' })
 	return parts[len(parts)-1]
 }
+
+func sync() error {
+	m, err := meta.Read()
+	if err != nil {
+		return err
+	}
+
+	var f forge.Forger
+	for name, pkg := range m.Packages {
+		fmt.Printf("syncing %q\n", name)
+		if err := os.RemoveAll(disk.Path(name)); err != nil {
+			return err
+		}
+		f, err = forge.NewGitea(pkg.Repo)
+		if strings.HasPrefix(pkg.Repo, "github") {
+			f, err = forge.NewGitHub(pkg.Repo)
+		}
+		if err != nil {
+			return err
+		}
+
+		asset, err := forge.TagRelease(f, pkg.Version)
+		if err != nil {
+			return err
+		}
+
+		if err := disk.Install(name, asset); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/meta/meta.go b/meta/meta.go
index f67fc8e..b19b877 100644
--- a/meta/meta.go
+++ b/meta/meta.go
@@ -8,31 +8,44 @@ import (
 	"os"
 	"strings"
 
+	"go.jolheiser.com/eget/disk"
+
 	"github.com/adrg/xdg"
 )
 
 type Meta struct {
-	Packages map[string]string `json:"packages"`
+	Packages map[string]Package `json:"packages"`
 }
 
-func Upsert(name, version string) error {
+type Package struct {
+	Repo    string `json:"repo"`
+	Version string `json:"version"`
+}
+
+func Upsert(name, repo, version string) error {
 	m, err := Read()
 	if err != nil {
 		return err
 	}
 	for n := range m.Packages {
 		if strings.EqualFold(n, name) {
-			m.Packages[n] = version
+			m.Packages[n] = Package{
+				Repo:    repo,
+				Version: version,
+			}
 			return save(m)
 		}
 	}
-	m.Packages[name] = version
+	m.Packages[name] = Package{
+		Repo:    repo,
+		Version: version,
+	}
 	return save(m)
 }
 
 func Read() (Meta, error) {
 	m := Meta{
-		Packages: make(map[string]string),
+		Packages: make(map[string]Package),
 	}
 	fp, err := metaPath()
 	if err != nil {
@@ -68,7 +81,11 @@ func Remove(name string) error {
 }
 
 func metaPath() (string, error) {
-	return xdg.DataFile("eget/meta.json")
+	return xdg.ConfigFile("eget/packages.json")
+}
+
+func nushellPath() (string, error) {
+	return xdg.DataFile("eget/eget.nu")
 }
 
 func save(m Meta) error {
@@ -80,6 +97,39 @@ func save(m Meta) error {
 	if err != nil {
 		return fmt.Errorf("could not create meta file: %w", err)
 	}
+	if err := json.NewEncoder(fi).Encode(m); err != nil {
+		return err
+	}
+	if err := fi.Close(); err != nil {
+		return err
+	}
+
+	fp, err = nushellPath()
+	if err != nil {
+		return fmt.Errorf("could not get nushell path: %w", err)
+	}
+	fi, err = os.Create(fp)
+	if err != nil {
+		return fmt.Errorf("could not create nushell file: %w", err)
+	}
 	defer fi.Close()
-	return json.NewEncoder(fi).Encode(m)
+	out, err := m.nushell()
+	if err != nil {
+		return fmt.Errorf("could not generate nushell environment: %w", err)
+	}
+	fi.WriteString(out)
+
+	return nil
+}
+
+func (m Meta) nushell() (string, error) {
+	tmpl := "let-env PATH = ($env.PATH | append '%s')\n"
+
+	var out strings.Builder
+	out.WriteString("# managed by eget; DO NOT EDIT\n\n")
+	for name := range m.Packages {
+		out.WriteString(fmt.Sprintf(tmpl, disk.Path(name)))
+	}
+
+	return out.String(), nil
 }
diff --git a/shell/nu.go b/shell/nu.go
deleted file mode 100644
index e498851..0000000
--- a/shell/nu.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package shell
-
-import (
-	"fmt"
-	"strings"
-
-	"go.jolheiser.com/eget/disk"
-	"go.jolheiser.com/eget/meta"
-)
-
-func Nu() (string, error) {
-	tmpl := "let-env PATH = ($env.PATH | append '%s')\n"
-	m, err := meta.Read()
-	if err != nil {
-		return "", err
-	}
-
-	var out strings.Builder
-	out.WriteString("# managed by eget; DO NOT EDIT\n\n")
-	for name := range m.Packages {
-		out.WriteString(fmt.Sprintf(tmpl, disk.Path(name)))
-	}
-
-	return out.String(), nil
-}