patching is da wae

nix/migrate-version.patch

@@ -0,0 +1,22 @@
+diff --git a/sql-migrate/config.go b/sql-migrate/config.go
+index 6947a53..df394d8 100644
+--- a/sql-migrate/config.go
++++ b/sql-migrate/config.go
+@@ -6,7 +6,6 @@ import (
+ 	"flag"
+ 	"fmt"
+ 	"os"
+-	"runtime/debug"
+ 
+ 	"github.com/go-gorp/gorp/v3"
+ 	"gopkg.in/yaml.v2"
+@@ -112,8 +111,5 @@ func GetConnection(env *Environment) (*sql.DB, string, error) {
+ 
+ // GetVersion returns the version.
+ func GetVersion() string {
+-	if buildInfo, ok := debug.ReadBuildInfo(); ok && buildInfo.Main.Version != "(devel)" {
+-		return buildInfo.Main.Version
+-	}
+-	return "dev"
++	return "@current_version@"
+ }

nix/sql-migrate.nix

@@ -2,6 +2,7 @@
 , lib
 , buildGoModule
 , fetchFromGitHub
+, substituteAll
 }:
 
 buildGoModule rec {
@@ -20,7 +21,13 @@ buildGoModule rec {
   ldflags = [
     "-s"
     "-w"
-    "-X Main.Version=v${version}"
+  ];
+
+  patches = [
+    (substituteAll {
+      src = ./migrate-version.patch;
+      current_version = "v${version}";
+    })
   ];
 
   doCheck = false;