diff --git a/pkgs/oizys/oizys-go/cmd/root.go b/pkgs/oizys/oizys-go/cmd/root.go
index 63d57ce..a573b4b 100644
--- a/pkgs/oizys/oizys-go/cmd/root.go
+++ b/pkgs/oizys/oizys-go/cmd/root.go
@@ -5,6 +5,7 @@ import (
 
 	o "oizys/internal/oizys"
 
+	"github.com/charmbracelet/log"
 	cc "github.com/ivanpirog/coloredcobra"
 	"github.com/spf13/cobra"
 )
@@ -46,7 +47,17 @@ var rootCmd = &cobra.Command{
 	},
 }
 
+func setupLogger() {
+  log.SetReportTimestamp(false)
+  styles := log.DefaultStyles()
+  for k, v := range styles.Levels {
+    styles.Levels[k] = v.MaxWidth(10)
+  }
+}
+
 func init() {
+  setupLogger()
+
 	rootCmd.CompletionOptions.HiddenDefaultCmd = true
 	rootCmd.PersistentFlags().StringVar(&flake, "flake", "", "path to flake ($OIZYS_DIR or $HOME/oizys)")
 	rootCmd.PersistentFlags().StringVar(&host, "host", "", "host to build (current host)")
diff --git a/pkgs/oizys/oizys-go/default.nix b/pkgs/oizys/oizys-go/default.nix
index 4ae8cdd..5cfc727 100644
--- a/pkgs/oizys/oizys-go/default.nix
+++ b/pkgs/oizys/oizys-go/default.nix
@@ -16,7 +16,7 @@ buildGoModule {
   version = "d${mkDate self.lastModifiedDate}";
 
   src = cleanSource ./.;
-  vendorHash = "sha256-Geqcp0/7I1IF2IfaYyIChz7SOCF+elIEdcz2VsAU0hQ=";
+  vendorHash = "sha256-/JVXhXrU2np/ty7AGFy+LPZCo1NaLYl9NAyD9+FJYBI=";
 
   nativeBuildInputs = [
     installShellFiles
diff --git a/pkgs/oizys/oizys-go/go.mod b/pkgs/oizys/oizys-go/go.mod
index 4beb2e0..4d683b1 100644
--- a/pkgs/oizys/oizys-go/go.mod
+++ b/pkgs/oizys/oizys-go/go.mod
@@ -5,6 +5,7 @@ go 1.22.2
 require (
 	github.com/briandowns/spinner v1.23.0
 	github.com/charmbracelet/lipgloss v0.11.0
+	github.com/charmbracelet/log v0.4.0
 	github.com/ivanpirog/coloredcobra v1.0.1
 	github.com/spf13/cobra v1.8.0
 	golang.org/x/term v0.21.0
@@ -14,6 +15,7 @@ require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/charmbracelet/x/ansi v0.1.2 // indirect
 	github.com/fatih/color v1.17.0 // indirect
+	github.com/go-logfmt/logfmt v0.6.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
@@ -22,5 +24,6 @@ require (
 	github.com/muesli/termenv v0.15.2 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
 	golang.org/x/sys v0.21.0 // indirect
 )
diff --git a/pkgs/oizys/oizys-go/go.sum b/pkgs/oizys/oizys-go/go.sum
index 327bef2..fffa560 100644
--- a/pkgs/oizys/oizys-go/go.sum
+++ b/pkgs/oizys/oizys-go/go.sum
@@ -4,15 +4,19 @@ github.com/briandowns/spinner v1.23.0 h1:alDF2guRWqa/FOZZYWjlMIx2L6H0wyewPxo/CH4
 github.com/briandowns/spinner v1.23.0/go.mod h1:rPG4gmXeN3wQV/TsAY4w8lPdIM6RX3yqeBQJSrbXjuE=
 github.com/charmbracelet/lipgloss v0.11.0 h1:UoAcbQ6Qml8hDwSWs0Y1cB5TEQuZkDPH/ZqwWWYTG4g=
 github.com/charmbracelet/lipgloss v0.11.0/go.mod h1:1UdRTH9gYgpcdNN5oBtjbu/IzNKtzVtb7sqN1t9LNn8=
+github.com/charmbracelet/log v0.4.0 h1:G9bQAcx8rWA2T3pWvx7YtPTPwgqpk7D68BX21IRW8ZM=
+github.com/charmbracelet/log v0.4.0/go.mod h1:63bXt/djrizTec0l11H20t8FDSvA4CRZJ1KH22MdptM=
 github.com/charmbracelet/x/ansi v0.1.2 h1:6+LR39uG8DE6zAmbu023YlqjJHkYXDF1z36ZwzO4xZY=
 github.com/charmbracelet/x/ansi v0.1.2/go.mod h1:dk73KoMTT5AX5BsX0KrqhsTqAnhZZoCBjs7dGWp4Ktw=
 github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
-github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
-github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
 github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
 github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
+github.com/go-logfmt/logfmt v0.6.0 h1:wGYYu3uicYdqXVgoYbvnkrPVXkuLM1p1ifugDMEdRi4=
+github.com/go-logfmt/logfmt v0.6.0/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
@@ -32,6 +36,8 @@ github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZ
 github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/muesli/termenv v0.15.2 h1:GohcuySI0QmI3wN8Ok9PtKGkgkFIk7y6Vpb5PvrY+Wo=
 github.com/muesli/termenv v0.15.2/go.mod h1:Epx+iuz8sNs7mNKhxzH4fWXGNpZwUaJKRS1noLXviQ8=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
@@ -41,19 +47,20 @@ github.com/spf13/cobra v1.8.0 h1:7aJaZx1B85qltLMc546zn58BxxfZdR/W22ej9CFoEf0=
 github.com/spf13/cobra v1.8.0/go.mod h1:WXLWApfZ71AjXPya3WOlMsY9yMs7YeiHhFVlvLyhcho=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=
+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
 golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.19.0 h1:+ThwsDv+tYfnJFhF4L8jITxu1tdTWRTZpdsWgEgjL6Q=
-golang.org/x/term v0.19.0/go.mod h1:2CuTdWZ7KHSQwUzKva0cbMg6q2DMI3Mmxp+gKJbskEk=
 golang.org/x/term v0.21.0 h1:WVXCp+/EBEHOj53Rvu+7KiT/iElMrO8ACK16SMZ3jaA=
 golang.org/x/term v0.21.0/go.mod h1:ooXLefLobQVslOqselCNF4SxFAaoS6KujMbsGzSDmX0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/pkgs/oizys/oizys-go/internal/oizys/main.go b/pkgs/oizys/oizys-go/internal/oizys/main.go
index 88c5afa..c5abd37 100644
--- a/pkgs/oizys/oizys-go/internal/oizys/main.go
+++ b/pkgs/oizys/oizys-go/internal/oizys/main.go
@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
-	"log"
 	"os"
 	"os/exec"
 	"strings"
@@ -15,6 +14,7 @@ import (
 	"golang.org/x/term"
 
 	"github.com/briandowns/spinner"
+	"github.com/charmbracelet/log"
 )
 
 // verbose vs debug?
@@ -62,7 +62,7 @@ func parseSystemPath(derivation map[string]Derivation) (string, error) {
 // nix derivation show `oizys output` | jq -r '.[].inputDrvs | with_entries(select(.key|match("system-path";"i"))) | keys | .[]'
 func (o *Oizys) getSystemPath() string {
 	cmd := exec.Command("nix", "derivation", "show", o.nixosConfigAttr())
-	log.Println("evaluating to get system-path")
+	log.Info("evaluating to get system-path")
 	cmd.Stderr = os.Stderr
 	out, err := cmd.Output()
 	if err != nil {
@@ -139,7 +139,7 @@ func parsePackages(lines []string, desc string) *packages {
 	for i, pkg := range lines {
 		s := strings.SplitN(pkg, "-", 2)
 		if len(s) != 2 {
-			log.Fatalln("failed to trim hash path from this line: ", pkg)
+			log.Fatalf("failed to trim hash path from this line: %s\n ", pkg)
 		}
 		name := ellipsis(strings.Replace(s[1], ".drv", "", 1), maxAcceptable)
 		if nameLen := len(name); nameLen > maxLen {
@@ -243,8 +243,8 @@ func parseDryRun(buf string) (*packages, *packages) {
 	}
 
 	if len(parts[0])+len(parts[1]) == 0 {
-		log.Println("no changes...")
-		log.Fatalln("or failed to parse nix build --dry-run output")
+		log.Info("no changes...")
+		log.Fatal("or failed to parse nix build --dry-run output")
 	}
 
 	return parsePackages(parts[0], "packages to build"),
@@ -364,7 +364,7 @@ func (o *Oizys) CacheBuild(rest ...string) {
 func (o *Oizys) CheckFlake() {
 	if _, ok := os.LookupEnv("OIZYS_SKIP_CHECK"); !ok {
 		if _, err := os.Stat(o.flake); errors.Is(err, fs.ErrNotExist) {
-			log.Fatalln("path to flake:", o.flake, "does not exist")
+			log.Fatalf("path to flake: %s does not exist", o.flake)
 		}
 	}
 }