add pin/unpin command

cmd/list.go

@@ -50,6 +50,11 @@ func newListCmd() *listCmd {
 					status = color.RedString("missing file")
 				}
 
+				if b.Pin {
+					fmt.Fprintf(w, "\n %s\t%s\t%s\t%s", os.ExpandEnv(b.Path), "*"+b.Version, b.URL, status)
+					continue
+				}
+
 				fmt.Fprintf(w, "\n %s\t%s\t%s\t%s", os.ExpandEnv(b.Path), b.Version, b.URL, status)
 			}
 			fmt.Fprintf(w, "\n\n")

cmd/pin.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"github.com/marcosnils/bin/pkg/config"
+	"github.com/spf13/cobra"
+)
+
+type pinCmd struct {
+	cmd *cobra.Command
+}
+
+func newPinCmd() *pinCmd {
+	root := &pinCmd{}
+
+	cmd := &cobra.Command{
+		Use:           "pin [<name> | <paths...>]",
+		Short:         "Pins current version of the binaries",
+		SilenceUsage:  true,
+		Args:          cobra.MinimumNArgs(1),
+		SilenceErrors: true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cfg := config.Get()
+
+			for _, b := range cfg.Bins {
+				for _, p := range args {
+					if b.RemoteName == p {
+						bin, err := getBinPath(p)
+						if err != nil {
+							return err
+						}
+						updatedCfg := cfg.Bins[bin]
+						updatedCfg.Pin = true
+
+						err = config.UpsertBinary(updatedCfg)
+						if err != nil {
+							return err
+						}
+					}
+
+					// TODO return error for unmatched ones
+				}
+			}
+
+			return nil
+		},
+	}
+
+	root.cmd = cmd
+	return root
+}

cmd/root.go

@@ -81,6 +81,8 @@ func newRootCmd(version string, exit func(int)) *rootCmd {
 		newInstallCmd().cmd,
 		newEnsureCmd().cmd,
 		newUpdateCmd().cmd,
+		newPinCmd().cmd,
+		newUnpinCmd().cmd,
 		newRemoveCmd().cmd,
 		newListCmd().cmd,
 		newPruneCmd().cmd,

cmd/unpin.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"github.com/marcosnils/bin/pkg/config"
+	"github.com/spf13/cobra"
+)
+
+type unpinCmd struct {
+	cmd *cobra.Command
+}
+
+func newUnpinCmd() *unpinCmd {
+	root := &unpinCmd{}
+
+	cmd := &cobra.Command{
+		Use:           "unpin [<name> | <paths...>]",
+		Short:         "Unpins current version of the binaries",
+		SilenceUsage:  true,
+		Args:          cobra.MinimumNArgs(1),
+		SilenceErrors: true,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cfg := config.Get()
+
+			for _, b := range cfg.Bins {
+				for _, p := range args {
+					if b.RemoteName == p {
+						bin, err := getBinPath(p)
+						if err != nil {
+							return err
+						}
+						updatedCfg := cfg.Bins[bin]
+						updatedCfg.Pin = false
+
+						err = config.UpsertBinary(updatedCfg)
+						if err != nil {
+							return err
+						}
+					}
+
+					// TODO return error for unmatched ones
+				}
+			}
+
+			return nil
+		},
+	}
+
+	root.cmd = cmd
+	return root
+}

cmd/update.go

@@ -59,6 +59,9 @@ func newUpdateCmd() *updateCmd {
 					if err != nil {
 						return err
 					}
+					if cfg.Bins[bin].Pin {
+						return fmt.Errorf("Cannot update a pinned binary")
+					}
 					binsToProcess[bin] = cfg.Bins[bin]
 				}
 			} else {

pkg/config/config.go

@@ -35,6 +35,7 @@ type Binary struct {
 	// the package path in config so we don't ask the user to select
 	// the path again when upgrading
 	PackagePath string `json:"package_path"`
+	Pin         bool   `json:"pin"`
 }
 
 func CheckAndLoad() error {