Suckless Guix

Today, we’ll see how to install and configure Suckless programs on GNU Guix.

This is mostly a response to Distrotube’s latest video on Guix. Derek is a great guy and I want to thank him for doing so much publicity work for Guix.

NOTE: This is not a tutorial for how to use git, how to compile or configure programs. This will just help you use the knowledge you already have on a GNU Guix System.

So, how do we install Suckless programs like dwm, st and dmenu on this great GNU/Linux distribution? Derek mentioned that on other systems he used to do a git clone for his forks and then install them with sudo make install. That’s what you usually do for this stuff, indeed.

But on Guix you can’t.

The way the Suckless makefiles are written combined with the way Guix works makes it impossible for you to compile them right after getting your code.

Let me show you what I mean by that with st. Clone the repo somewhere:

git clone https://git.suckless.org/st

And try to run make in it.

[brown@121408 ~]$ cd st
[brown@121408 st]$ make
st build options:
CFLAGS  = -I/gnu/store/nab7hhw326cpmpwyc1rgm0q8sk464qry-libx11-1.6.9/include -I/gnu/store/a8gdwnmpryd39jixzy4xs9p4i7gy17qv-libxcb-1.14/include -I/gnu/store/h7sy4hr7arjknbyy1aq0xwv6fksnzw9n-libxau-1.0.9/include -I/gnu/store/6cdl970wcv4jhvpgbh8sdj54a5gwhmwj-libxdmcp-1.1.3/include -I/gnu/store/wxl57nkbqgamfp73b7v62kk3f1hiv0cz-xorgproto-2019.2/include  -I/gnu/store/yykjxzsw9yrhbdwm0v45cxp2fnyjzn6f-fontconfig-2.13.1/include -I/gnu/store/a45p39mgqvfd8kjwibyr0q42k1mw7gmf-util-linux-2.35.1-lib/include/uuid -I/gnu/store/imh5xxqw10dql4crlngbbjh4r24raf4j-expat-2.2.9/include -I/gnu/store/haaam6v8l4s75mj9xmpb9gc78xk001y9-freetype-2.10.1/include/freetype2 -I/gnu/store/3x2kak8abb6z2klch72kfff2qxzv00pj-libpng-1.6.37/include/libpng16 -I/gnu/store/rykm237xkmq7rl1p0nwass01p090p88x-zlib-1.2.11/include  -I/gnu/store/haaam6v8l4s75mj9xmpb9gc78xk001y9-freetype-2.10.1/include/freetype2 -I/gnu/store/3x2kak8abb6z2klch72kfff2qxzv00pj-libpng-1.6.37/include/libpng16 -I/gnu/store/rykm237xkmq7rl1p0nwass01p090p88x-zlib-1.2.11/include -DVERSION="0.8.4" -D_XOPEN_SOURCE=600  -O1
LDFLAGS = -L/usr/X11R6/lib -lm -lrt -lX11 -lutil -lXft  -L/gnu/store/yykjxzsw9yrhbdwm0v45cxp2fnyjzn6f-fontconfig-2.13.1/lib -L/gnu/store/haaam6v8l4s75mj9xmpb9gc78xk001y9-freetype-2.10.1/lib -lfontconfig -lfreetype  -L/gnu/store/haaam6v8l4s75mj9xmpb9gc78xk001y9-freetype-2.10.1/lib -lfreetype
CC      = c99
c99 `pkg-config --cflags x11`  `pkg-config --cflags fontconfig`  `pkg-config --cflags freetype2` -DVERSION=\"0.8.4\" -D_XOPEN_SOURCE=600  -O1 -c st.c
/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/sh: c99: command not found
make: *** [Makefile:22: st.o] Error 127

On my system, pkg-config managed to find the X11 and fontconfig libraries and whatever else it needs, because I have them installed (but it still failed – we’ll talk about why in a second). For you it might not be this case. Let’s see how to ensure we have all the dependencies.

Guix has this awesome feature called “environments”. An environment is like a temporary profile. You can install packages in that environment, and they’ll be available for as long as you are yourself in that environment, but as soon as you quit it, those packages are not available anymore (you’re back to your setup). Environments are great for developing stuff – you can set up an one with all the dependencies for a project and activate it whenever you want to work in that thing.

You can tell an environment what packages to contain the following ways: either by guix environment st or guix environment --ad-hoc pkg-config.

The first way looks at the definition for the st package (that means it has to be in the Guix repos or in one of your channels) and pulls all the dependencies needed to build that package.

The second way installs whatever packages you write after --ad-hoc directly in your environment.

So, if we want to have everything we need to build st, we’ll use guix environment st.

We notice that make complains about c99 not being found. That’s because st tries to use c99 as the default compiler executable. To change that we use CC=gcc (if it complains about gcc not existing, try installing gcc-toolchain in the profile; I don’t think that will be necessary though) in the command invocation. Also, note that the /usr/local directory does not exist on a Guix System, and that’s where st tries to install by default. We override that by setting PREFIX.

The full command to build and install will be:

guix environment st -- make install CC=gcc PREFIX=~/.local

Your st executable will now be at ~/.local/bin/st.

To ensure better integration, I suggest you make st find the X11 libraries with pkg-config too.

1 file changed, 9 insertions(+), 15 deletions(-)
config.mk | 24 +++++++++---------------

modified   config.mk
@@ -7,29 +7,23 @@ VERSION = 0.8.4
 PREFIX = /usr/local
 MANPREFIX = $(PREFIX)/share/man

-X11INC = /usr/X11R6/include
-X11LIB = /usr/X11R6/lib
 PKG_CONFIG = pkg-config

 # includes and libs
-INCS = -I$(X11INC) \
+INCS = `$(PKG_CONFIG) --cflags x11` \
+          `$(PKG_CONFIG) --cflags xft` \
+          `$(PKG_CONFIG) --cflags xrender` \
        `$(PKG_CONFIG) --cflags fontconfig` \
        `$(PKG_CONFIG) --cflags freetype2`
-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
-       `$(PKG_CONFIG) --libs fontconfig` \
-       `$(PKG_CONFIG) --libs freetype2`
+LIBS = -lm -lrt -lutil \
+               `$(PKG_CONFIG) --libs x11` \
+               `$(PKG_CONFIG) --libs xft` \
+               `$(PKG_CONFIG) --libs xrender` \
+               `$(PKG_CONFIG) --libs fontconfig` \
+               `$(PKG_CONFIG) --libs freetype2`

 # flags

-# OpenBSD:
-#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
-#       `$(PKG_CONFIG) --libs fontconfig` \
-#       `$(PKG_CONFIG) --libs freetype2`
-# compiler and linker
-# CC = c99

Setting up dwm and dmenu will be similar, but be careful as you’ll have to define the PKG_CONFIG variable on your own in their config.mk. That’s what got me a few times before. As their package definition in Guix doesn’t depend on pkg-config, you’ll have to use --ad-hoc pkg-config when writing their environments.

I suggest you put the commands for creating the specific environments and building each program in a script, so you don’t have to remember them. I have a guix-install script in the root of every suckless program, and all I need to write to build and install one is ./guix-install.

You could, of course, create a package definition for your forks, as Ukko suggested in a comment on Distrotube’s video:

To make an st/dwm/etc from a custom source (but with the same command-line commands as upstream) you should be able to add something like:

(define my-st
   (inherit st)
     (method git-fetch)
     (uri (git-reference
           (url "https://url.tld/repo.git")
           (commit "commit hash, can also be a tag name")))
       "hash string"))))))

to your config file and then use my-st instead of st further in the config. If you want to create such packages for availability with `guix install`, you should probably create your own channel (https://guix.gnu.org/manual/en/guix.html#Channels).

Oh and to get the hash string you can run `guix hash -rx .` in your cloned repository (or just let guix fail with a hash mismatch because it will display what the actual hash is lmao)

I don’t use that method because I want to be able to configure and reinstall my programs without pushing to a repository and synchronzing channels, but if you have a build that you’re confident you’ll not want to modify too much, this is a great approach too.

You can find all of my suckless forks on sourcehut.

1 EDIT <2020-07-31 Vi 12:17>

Ukko also points out that stuff installed with my method might stop working after a guix gc. I guess that is because it might garbage collect some libraries that your builds depend on. I think that if you want to use my method it would be safe to also install the dependecies directly in your profile to ensure they don’t get garbage collected. If your suckless programs don’t start anymore, you can always enter a TTY (Ctrl+Alt+F1 through F7, I think; this is assuming your WM is borked too, otherwise a normal terminal works just fine) and rebuild them from there. The X session is on F7 by default.

But there’s a better solution!

You could define a lightweight recipe for your suckless programs right in their directories and install that with Guix, but without pulling the code from a repo, and instead using the current directory. Here’s how I do it for my st build:

(use-modules (guix gexp)
             (gnu packages)
             (gnu packages suckless)
             (guix packages)
             (guix git-download)
             (guix build-system gnu))

(define %source-dir (dirname (current-filename)))

(define-public st-121407
    (inherit st)
    (source (local-file %source-dir
                        #:recursive? #t
                        #:select? (git-predicate %source-dir)))))


This way, it shouldn’t break after you throw away the trash with guix gc and you don’t have to install the dependencies explicitly in your profile.

You can edit your config however you want and instead of running make, to install it you’ll now use guix package -f st.scm (replace st.scm with however you named your file; the convention for those local definitions is that the file is named guix.scm).

If you want to see more examples of package definitions like this, that build from the current directory, you can try searching GitHub or other forges for guix.scm files. That’s how Ukko found this one, which we treated as a base.