env vars defined earlier fail to render in subsequent env var templates

[bartsmykla]

Describe the bug
According to the documentation (https://mise.jdx.dev/environments/#using-env-vars-in-other-env-vars), it should be possible to use env vars defined earlier in subsequent env vars. However, when I attempt the following:

[env]
A = "a"
B = "{{ env.B }}"

I receive the following error:

mise ERROR failed to parse template: '{{ env.B }}'
mise ERROR Failed to render '__tera_one_off'
mise ERROR Variable `env.B` not found in context while rendering '__tera_one_off'
mise ERROR Run with --verbose or MISE_VERBOSE=1 for more information

This prevents me from using a variable from a script in a PATH definition. For example:

[env]
_.source = ".mise/env.sh"
_.path = [
    "{{ env.__GENERATE_TOOLS_DIR }}",
]

To Reproduce

1. Define environment variables as shown in the example above.
2. Run mise and observe the error output.

Expected behavior
I expected the environment variables defined earlier to be usable in subsequent env vars without causing errors.

mise doctor output

version: 2024.12.15 macos-arm64 (0d37f33 2024-12-19)
activated: yes
shims_on_path: no

build_info:
Target: aarch64-apple-darwin
Features: DEFAULT, NATIVE_TLS, OPENSSL
Built: Thu, 19 Dec 2024 18:51:18 +0000
Rust Version: rustc 1.83.0 (90b35a623 2024-11-26)
Profile: release

shell:
/opt/homebrew/bin/fish
fish, version 3.7.1

dirs:
cache: ~/Library/Caches/mise
config: ~/.config/mise
data: ~/.local/share/mise
shims: ~/.local/share/mise/shims
state: ~/.local/state/mise

config_files:
~/.config/mise/config.toml
~/project/mise.toml

backends:
aqua
asdf
cargo
core
gem
go
npm
pipx
spm
ubi
vfox

plugins:
clang-format           git@github.com:higebu/asdf-llvm.git#c527fd9
kube-controller-tools  git@github.com:jimmidyson/asdf-kube-controller-tools.git#37526dc
oapi-codegen           git@github.com:dylanrayboss/asdf-oapi-codegen.git#a988840

toolset:
aqua:GoogleContainerTools/container-structure-test@1.19.3
aqua:etcd-io/etcd@3.5.17
aqua:golangci/golangci-lint@1.62.0
aqua:helm/helm@3.16.4
aqua:jqlang/jq@1.7.1
aqua:koalaman/shellcheck@0.10.0
aqua:kubernetes-sigs/kubebuilder@4.3.1
aqua:kubernetes/kubectl@1.32.0
aqua:norwoodj/helm-docs@1.11.0
aqua:protocolbuffers/protobuf-go/protoc-gen-go@1.28.1
aqua:protocolbuffers/protobuf/protoc@3.20.0
aqua:stackrox/kube-linter@0.6.5
asdf:kube-controller-tools@0.16.5
asdf:oapi-codegen@2.4.1
core:go@1.23.4
go:github.com/envoyproxy/protoc-gen-validate@v1.1.0
go:github.com/google/osv-scanner/cmd/osv-scanner@1.9.1
go:github.com/onsi/ginkgo/v2/ginkgo@2.22.0
go:github.com/pubg/protoc-gen-jsonschema@0.6.2
go:google.golang.org/grpc/cmd/protoc-gen-go-grpc@1.1.0
ubi:bartsmykla/clang-tools-static-binaries@foo
ubi:hadolint/hadolint@2.12.0
ubi:jdx/usage@1.7.2
ubi:k3d-io/k3d@5.7.5
ubi:kubernetes-sigs/kind@0.26.0
ubi:mikefarah/yq@4.30.8

[jdx]

don't you mean B = "{{env.A}}"? that works for me

[bartsmykla]

@jdx You’re right - I made a mistake. The A and B examples were oversimplified and by my mistake actually were incorrect. My actual problem happens with the following setup:

In my mise.toml file:

[env]
_.source = { path = ".mise/env.sh", tools = true }
_.path = [
    "{{ env.__GENERATE_TOOLS_DIR }}",
]

And .mise/env.sh contains:

#!/usr/bin/env bash

set -Eeuo pipefail

export __GENERATE_TOOLS_DIR="/foo"

When I run this, I get the following error:

[debug:env] ERROR task failed
mise ERROR failed to parse template: '{{ env.__GENERATE_TOOLS_DIR }}'
mise ERROR Failed to render '__tera_one_off'
mise ERROR Variable `env.__GENERATE_TOOLS_DIR` not found in context while rendering '__tera_one_off'
mise ERROR Run with --verbose or MISE_VERBOSE=1 for more information

It seems like the variable __GENERATE_TOOLS_DIR is not being passed into the template context.